SHSH

SHSH, or "Signed Hash" is a 1024-bit RSA signature that is verified by the bootloader before execution of an image is permitted.

Technically, the SHSH of a firmware image is a 1024-bit (0x80 bytes) RSA signature. This often also refers to backup files with the signature ("SHSH blobs"). This signature is needed to restore a specific iOS version; it is generated by Apple based on hardware keys of the device and the hash of the firmware. Apple only issues signatures for the currently-available iOS version, which disallows installing older iOS versions. But if you have saved signatures for an older iOS version, you may be able to use a replay attack to restore that version. Therefore it is recommended to save the signature for your device as long as Apple issues it.

With the tools mentioned below it is possible to backup the signature. It is not necessary that the device is jailbroken to do the backup.

Users often misunderstand this system and think that the SHSH firmware version they back up depends on the firmware version they have installed on their device. This is the case for iFaith, but not for TinyUmbrella. iFaith dumps the SHSHs from your device's storage (whatever's installed on your device, e.g. 4.3.3), while TinyUmbrella gets SHSHs from Apple's servers (whatever firmwares Apple is currently signing).

SHSH blobs are unique to each device by ECID.

Using SHSH

Older devices (iPhone and iPod touch) do not use SHSH signatures, so installation of any firmware on these devices is possible.

iPhone OS 1.x and 2.x do not use SHSH signatures, and can therefore be downgraded to at any time, even on devices that do use SHSH signatures, such as iPhone 3G.

Versions above iPhone OS 3.0 require the iBEC, iBSS, and LLB to be fully signed with an SHSH for the ECID of that device.

However, some devices are vulnerable to untethered bootrom exploits, such as 0x24000 Segment Overflow or alloc8. These devices can be restored to a custom IPSW in Pwned DFU Mode for any version that is available to that particular device. Notable devices vulnerable to untethered bootrom exploits are the iPhone 3GS and iPod touch (2nd generation). The limera1n Exploit is able to provide a tethered downgrade for vulnerable devices.

Since various exploits, such as the limera1n Exploit, are fixed in the bootrom since version Bootrom 838.3 and because iOS versions 5.0 and above includes a nonce in their SHSH hashes, downgrading newer devices is not as simple. Blobs must be stitched into a custom firmware, and restored to in Pwned DFU Mode.

Blobs can be saved with tools such as iFaith and TinyUmbrella. Firmwares can be stitched using iFaith, redsn0w or sn0wbreeze.

Newer methods such as Odysseus, Prometheus or iDeviceReRestore are used now because other tools have become outdated and newer versions of iTunes prevents restores to custom versions.

Timeline

As noted above, the original iPhone and iPod touch didn't use SHSH blobs. iPhone OS 1.x and 2.x didn't use SHSH blobs either. iPhone 3G and iPod touch (2nd generation) both used SHSH blobs on iOS 4, but following the re-opening on 10 January 2018, all versions (excluding betas) that they ever ran can now be freely installed.

iOS

Firmware	For Device(s)	From	Until	Status
13.5	iPad (5th generation), iPad (6th generation), iPad (7th generation), iPad mini 4, iPad mini (5th generation), iPad Air 2, iPad Air (3rd generation), iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Pro (11-inch) (2nd generation), iPad Pro (12.9-inch) (4th generation), iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2nd generation), iPod touch (7th generation)	20 May 2020	-	Open
13.4.1	iPhone SE (2nd generation)	23 April 2020	-	Open
	iPad (5th generation), iPad (6th generation), iPad (7th generation), iPad mini 4, iPad mini (5th generation), iPad Air 2, iPad Air (3rd generation), iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Pro (11-inch) (2nd generation), iPad Pro (12.9-inch) (4th generation), iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPod touch (7th generation)	7 April 2020	-	Open
13.4		24 March 2020	16 April 2020	Closed
13.3.1	iPad (5th generation), iPad (6th generation), iPad (7th generation), iPad mini 4, iPad mini (5th generation), iPad Air 2, iPad Air (3rd generation), iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPod touch (7th generation)	28 January 2020	31 March 2020	Closed
13.3		10 December 2019	12 February 2020	Closed
13.2.3		18 November 2019	20 December 2019	Closed
13.2.2		7 November 2019	2 December 2019	Closed
13.2		28 October 2019	14 November 2019	Closed
13.1.3		15 October 2019	6 November 2019	Closed
13.1.2		30 September 2019		Closed
13.1.1		27 September 2019	4 October 2019	Closed
13.1		24 September 2019	8 October 2019	Closed
13.0	iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max	19 September 2019	4 October 2019	Closed
12.4.7	iPad Air, iPad mini 2, iPad mini 3, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (6th generation)	20 May 2020	-	Open
12.4.6		24 March 2020	-	Open
12.4.5		28 January 2020	31 March 2020	Closed
12.4.4		10 December 2019	-	Open
12.4.3		28 October 2019	9 January 2020	Closed
12.4.2		26 September 2019	6 November 2019	Closed
	iPad Air 2, iPad mini 4, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation)		8 October 2019	Closed
12.4.1	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Air (3rd generation), iPad mini 2, iPad mini 3, iPad mini 4, iPad mini (5th generation), iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPod touch (6th generation), iPod touch (7th generation)	26 August 2019	4 October 2019	Closed
12.4		22 July 2019	12 September 2019	Closed
12.3.2	iPhone 8 Plus	10 June 2019	31 July 2019	Closed
12.3.1	iPod touch (7th generation)	28 May 2019		Closed
	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Air (3rd generation), iPad mini 2, iPad mini 3, iPad mini 4, iPad mini (5th generation), iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPod touch (6th generation)	24 May 2019		Closed
12.3		13 May 2019		Closed
12.2		25 March 2019	23 May 2019	Closed
12.1.4	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPod touch (6th generation)	7 February 2019	4 April 2019	Closed
12.1.3		22 January 2019	18 March 2019	Closed
12.1.2 (16C104)	iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max	20 December 2018	5 February 2019	Closed
12.1.2 (16C101)		17 December 2018
12.1.1	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPod touch (6th generation)	5 December 2018	5 February 2019	Closed
12.1		30 October 2018	18 December 2018	Closed
12.0.1	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XR, iPhone XS, iPhone XS Max, iPod touch (6th generation)	8 October 2018	27 November 2018	Closed
12.0	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPod touch (6th generation)	17 September 2018	22 October 2018	Closed
	iPhone XR		17 September 2018	Closed
11.4.1	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad (6th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPod touch (6th generation)	9 July 2018	8 October 2018	Closed
11.4		29 May 2018	17 July 2018	Closed
11.3.1		24 April 2018	7 June 2018	Closed
11.3	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPod touch (6th generation)	29 March 2018	2 May 2018	Closed
	iPad (6th generation)	28 March 2018		Closed
11.2.6	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPod touch (6th generation)	19 February 2018	6 April 2018	Closed
11.2.5		23 January 2018	1 March 2018	Closed
11.2.2		8 January 2018	31 January 2018	Closed
11.2.1		13 December 2017	31 January 2018	Closed
11.2 (15C114)		2 December 2017	31 January 2018	Closed
11.2 (15C113)	iPhone X (iPhone10,3)	4 December 2017	?	Closed
11.1.2	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPod touch (6th generation)	16 November 2017	15 December 2017	Closed
11.1.1		9 November 2017	15 December 2017	Closed
11.1		31 October 2017	5 December 2017	Closed
11.0.3	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPod touch (6th generation)	11 October 2017	28 November 2017	Closed
11.0.2		3 October 2017	16 November 2017	Closed
11.0.1	iPhone 8, iPhone 8 Plus	26 September 2017	15 December 2017	Closed
	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPod touch (6th generation)		16 November 2017	Closed
11.0		19 September 2017	4 October 2017	Closed
10.3.4	iPad (4th generation), iPhone 5, iPhone 5c	22 July 2019	-	Open
10.3.3	iPhone 6s	5 October 2017	16 November 2017	Closed
	iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPod touch (6th generation)	19 July 2017	4 October 2017	Closed
	iPad (4th generation), iPhone 5, iPhone 5c	19 July 2017	-	Open
10.3.2	iPad Pro (12.9-inch) (2nd generation), iPad Pro (10.5-inch)	5 June 2017	9 August 2017	Closed
	iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad (5th generation), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPod touch (6th generation)	15 May 2017	9 August 2017	Closed
10.3.1		3 April 2017	27 June 2017	Closed
10.3		27 March 2017	10 April 2017	Closed
10.2.1	iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPod touch (6th generation)	23 January 2017	10 April 2017	Closed
10.2		12 December 2016	30 January 2017	Closed
10.1.1 (14B150)		9 November 2016	20 December 2016	Closed
10.1.1 (14B100)		31 October 2016	20 December 2016	Closed
10.1		24 October 2016	20 December 2016	Closed
10.0.3	iPhone 7, iPhone 7 Plus	17 October 2016	31 October 2016	Closed
10.0.2	iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, iPhone 7 Plus, iPod touch (6th generation)	23 September 2016	31 October 2016	Closed
10.0.1		13 September 2016	18 October 2016	Closed
9.3.6	iPad2,3, iPad2,6 iPad2,7 iPad3,2 iPad3,3, iPhone 4S	22 July 2019	-	Open
9.3.5	iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPod touch (6th generation)	25 August 2016	18 October 2016	Closed
	iPad 2, iPad (3rd generation), iPad mini, iPhone 4S, iPod touch (5th generation)		-	Open
9.3.4	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPod touch (5th generation), iPod touch (6th generation)	4 August 2016	7 September 2016	Closed
9.3.3		18 July 2016	24 August 2016	Closed
9.3.2 (13F72)	iPad Pro (9.7-inch)	2 June 2016	24 August 2016	Closed
9.3.2 (13F69)	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (iPad6,4), iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPod touch (5th generation), iPod touch (6th generation)	16 May 2016	24 August 2016	Closed
	iPad Pro (iPad6,3)		26 May 2016	Closed
9.3.1	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad Pro (9.7-inch), iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPod touch (5th generation), iPod touch (6th generation)	31 March 2016	10 June 2016	Closed
9.3 (13E237)	iPad 2 (iPad2,1), iPad 2 (iPad2,3), iPad 2 (iPad2,4), iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)	28 March 2016	22 April 2016	Closed
9.3 (13E236)	iPad 2 (iPad2,2)	25 March 2016		Closed
9.3 (13E234)	iPad Pro (9.7-inch)	21 March 2016	18 April 2016	Closed
9.3 (13E233)	iPad Air 2, iPad Pro (12.9-inch), iPad mini 3, iPad mini 4, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPod touch (6th generation)			Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)		24 March 2016	Closed
9.2.1 (13D20)	iPad Air 2, iPad Pro (12.9-inch), iPad mini 3, iPad mini 4, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus	18 February 2016	5 April 2016	Closed
9.2.1 (13D15)	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPod touch (5th generation), iPod touch (6th generation)	19 January 2016		Closed
9.2	iPad 2 (iPad2,4), iPad (3rd generation) (iPad3,1), iPad (4th generation), iPad Air, iPad Air 2, iPad Pro (12.9-inch), iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPod touch (5th generation), iPod touch (6th generation)	8 December 2015	5 February 2016	Closed
	iPad 2 (iPad2,1), iPad 2 (iPad2,2), iPad 2 (iPad2,3), iPad (3rd generation) (iPad3,2), iPad (3rd generation) (iPad3,3), iPhone 4S		4 February 2016	Closed
9.1 (13B144)	iPad Pro (12.9-inch)	17 November 2015	21 December 2015	Closed
9.1 (13B143)	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPod touch (5th generation), iPod touch (6th generation)	21 October 2015		Closed
	iPad Pro		2 December 2015	Closed
9.0.2	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (5th generation), iPod touch (6th generation)	30 September 2015	29 October 2015	Closed
9.0.1	iPhone 6s, iPhone 6s Plus	24 September 2015	8 October 2015	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (5th generation), iPod touch (6th generation)	23 September 2015		Closed
9.0	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPad mini 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPod touch (5th generation), iPod touch (6th generation)	16 September 2015	30 September 2015	Closed
8.4.1	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (5th generation), iPod touch (6th generation)	13 August 2015		Closed
8.4	iPod touch (6th generation)	15 July 2015	23 August 2015	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad Air 2, iPad mini, iPad mini 2, iPad mini 3, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (5th generation)	30 June 2015	23 August 2015	Closed
8.3		8 April 2015	7 July 2015	Closed
8.2		9 March 2015	4 May 2015	Closed
8.1.3		27 January 2015	23 March 2015	Closed
8.1.2		9 December 2014	10 February 2015	Closed
8.1.1		17 November 2014	17 December 2014	Closed
8.1		20 October 2014	1 December 2014	Closed
8.0.2	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus, iPod touch (5th generation)	25 September 2014	20 October 2014	Closed
8.0.1		24 September 2014		Closed
8.0		17 September 2014	22 October 2014	Closed
7.1.2	iPhone 4	30 June 2014	-	Open
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)		26 September 2014	Closed
7.1.1	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)	22 April 2014	12 August 2014	Closed
7.1		10 March 2014	30 April 2014	Closed
7.0.6		21 February 2014	10 March 2014	Closed
7.0.5	iPhone 5c (iPhone5,4), iPhone 5s (iPhone6,2)	29 January 2014	21 February 2014	Closed
7.0.4	iPad 2, iPad (3rd generation), iPad (4th generation), iPad Air, iPad mini, iPad mini 2, iPhone 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)	14 November 2013	21 February 2014	Closed
7.0.3		22 October 2013	14 November 2013	Closed
7.0.2	iPad mini (iPad2,5)	26 September 2013	21 February 2014	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad mini (iPad2,6), iPad mini (iPad2,7), iPhone 4, iPhone 4S, iPhone 5, iPhone 5c, iPhone 5s, iPod touch (5th generation)		29 October 2013	Closed
7.0.1	iPhone 5c, iPhone 5s	18 September 2013	7 October 2013	Closed
7.0	iPad 2, iPad (3rd generation), iPad (4th generation), iPad mini, iPhone 4, iPhone 4S, iPhone 5, iPod touch (5th generation)	18 September 2013	7 October 2013	Closed
6.1.6	iPhone 3GS, iPod touch (4th generation)	21 February 2014	-	Open
6.1.5	iPod touch (4th generation)	14 November 2013	21 February 2014	Closed
6.1.4	iPhone 5	2 May 2013	20 September 2013	Closed
6.1.3	iPad2,1, iPad2,2, iPad2,3, iPhone 4S	10 January 2018	7 November 2019	Closed
	iPhone 3GS	19 March 2013	21 February 2014	Closed
	iPod touch (4th generation)		14 November 2013	Closed
	iPhone 5		2 May 2013	Closed
	iPad mini (iPad2,6)		25 September 2013	Closed
	iPad2,4, iPad (3rd generation), iPad (4th generation), iPad mini (iPad2,5), iPad mini (iPad2,7), iPhone 4, iPod touch (5th generation)		20 September 2013	Closed
6.1.2	iPod touch (5th generation)	19 February 2013	20 March 2013	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad mini iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4th generation)		19 March 2013	Closed
6.1.1	iPhone 4S	11 February 2013	19 February 2013	Closed
6.1	iPad mini (iPad2,6), iPod touch (4th generation)	28 January 2013	20 March 2013	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation), iPad mini, iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (5th generation)		19 February 2013	Closed
6.0.2	iPad mini (iPad2,5), iPhone 5	26 July 2013		Closed
	iPad mini, iPhone 5	18 December 2012	28 January 2013	Closed
6.0.1	iPad 2, iPad (3rd generation), iPad (4th generation), iPad mini, iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4th generation), iPod touch (5th generation)	1 November 2012	28 January 2013	Closed
	iPad 2, iPad (3rd generation), iPad (4th generation) (iPad3,4), iPad mini (iPad2,5), iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4th generation), iPod touch (5th generation)	26 July 2013		Closed
	iPad mini	1 November 2012	8 January 2013	Closed
	iPad (4th generation), iPad mini	9 November 2012	28 January 2013	Closed
6.0	iPad (4th generation) (iPad3,4), iPad mini (iPad2,5)	30 October 2012	1 November 2012	Closed
	iPad 2, iPad (3rd generation), iPad mini (iPad2,5), iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4th generation), iPod touch (5th generation)	26 July 2013		Closed
	iPad 2, iPad (3rd generation), iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (4th generation), iPod touch (5th generation)	19 September 2012	1 November 2012	Closed
5.1.1 (9B208)	iPhone 4 (iPhone3,1)	25 May 2012	21 September 2012	Closed
5.1.1 (9B206)	iPad	13 February 2017	-	Open
		7 May 2012	13 February 2017	Closed
	iPod touch (3rd generation)		-	Open
	iPad 2, iPad (3rd generation), iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (4th generation)		21 September 2012	Closed
5.1	iPad, iPad 2, iPad (3rd generation), iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation), iPod touch (4th generation)	7 March 2012	14 May 2012	Closed
5.0.1	iPad, iPad 2, iPhone 3GS, iPhone 4, iPhone 4S, iPod touch (3rd generation), iPod touch (4th generation)	9 November 2011	8 February 2012	Closed
5.0	iPhone 4S	14 October 2011	10 November 2011(?)	Closed
	iPad, iPad 2, iPhone 3GS, iPhone 4, iPod touch (3rd generation), iPod touch (4th generation)	4 October 2011	10 November 2011(?)	Closed
4.3.5	iPad, iPad 2, iPhone 3GS, iPhone 4(iPhone3,1), iPod touch (3rd generation), iPod touch (4th generation)	25 July 2011	18 October 2011	Closed
4.3.4		15 July 2011	27 July 2011	Closed
4.3.3		4 May 2011	18 July 2011	Closed
4.3.2		14 April 2011	6 May 2011	Closed
4.3.1		25 March 2011	19 April 2011 (?)	Closed
4.3		9 March 2011	27 March 2011 (?)	Closed
4.2.10	iPhone 4 (iPhone3,3)	25 July 2011	18 October 2011	Closed
4.2.9		15 July 2011	27 July 2011	Closed
4.2.8		4 May 2011	18 July 2011	Closed
4.2.7		14 April 2011	6 May 2011	Closed
4.2.6		1 February 2011	19 April 2011 (?)	Closed
4.2.1	iPhone 3G, iPod touch (2nd generation)	22 November 2010	-	Open
	iPad, iPhone 3GS, iPhone 4 (iPhone3,1), iPod touch (3rd generation), iPod touch (4th generation)		11 March 2011	Closed
4.1 (8B118)	iPod touch (4th generation)	21 September 2010	2 December 2010 (?)	Closed
4.1 (8B117)	iPod touch (2nd generation), iPod touch (3rd generation)	8 September 2010	-	Open
	iPhone 3G, iPhone 3GS	13 February 2017		Open
		8 September 2010	13 February 2017	Closed
	iPhone 4 (iPhone3,1), iPod touch (4th generation)		2 December 2010 (?)	Closed
4.0.2	iPhone 3GS, iPhone 4 (iPhone3,1), iPod touch (3rd generation)	11 August 2010	9 September 2010	Closed
	iPhone 3G, iPod touch (2nd generation)	10 January 2018	-	Open
		11 August 2010	18 September 2010	Closed
4.0.1	iPhone 3G	10 January 2018	-	Open
		15 July 2010	9 September 2010	Closed
	iPhone 3GS, iPhone 4 (iPhone3,1)	15 July 2010	19 August 2010	Closed
4.0	iPhone 3G, iPod touch (2nd generation)	10 January 2018	-	Open
	iPod touch (3rd generation)	21 June 2010	9 August 2010	Closed
	iPod touch (2nd generation)	21 June 2010	9 September 2010	Closed
	iPhone 3G	21 June 2010	15 July 2010	Closed
	iPhone 3GS	21 June 2010	15 July 2010	Closed
	iPhone 4 (iPhone3,1)	24 June 2010	15 July 2010	Closed
3.2.2	iPad	11 August 2010	2 December 2010 (?)	Closed
3.2.1		15 July 2010	19 August 2010	Closed
3.2		3 April 2010	15 July 2010	Closed
3.1.3	iPod touch (2nd generation)	10 January 2018	-	Open
	iPhone 3GS, iPod touch (2nd generation), iPod touch (3rd generation)	2 February 2010	21 June 2010	Closed
3.1.2	iPhone 3GS, iPod touch (3rd generation)	8 October 2009	2 February 2010	Closed
	iPod touch (2nd generation)	10 January 2018	-	Open
		8 October 2009	21 June 2010	Closed
3.1.1 (7C146)	iPod touch (3rd generation)	17 September 2009	8 October 2009 (?)	Closed
3.1.1 (7C145)		9 September 2009	8 October 2009	Closed
	iPod touch (2nd generation)	10 January 2018	-	Open
		9 September 2009	21 June 2010	Closed
3.1	iPhone 3GS	9 September 2009	8 October 2009	Closed
3.0.1		31 July 2009	9 September 2009	Closed
3.0		19 June 2009		Closed

tvOS

Firmware	For Device(s)	From	Until	Status
13.4.5	Apple TV 4K Apple TV (4th generation)	20 May 2020	-	Open
13.4		24 March 2020	-	Open
13.3.1		28 January 2020	31 March 2020	Closed
13.3		10 December 2019	6 February 2020	Closed
13.2		28 October 2019	8 January 2020	Closed
13.0		24 September 2019	6 November 2019	Closed
12.4.1		26 August 2019	4 October 2019	Closed
12.4		22 July 2019	12 September 2019	Closed
12.3		13 May 2019	31 July 2019	Closed
12.2.1		10 April 2019	23 May 2019	Closed
12.2		25 March 2019	23 May 2019	Closed
12.1.2		22 January 2019	4 April 2019	Closed
12.1.1		5 December 2018	5 February 2019	Closed
12.1		30 October 2018	14 December 2018	Closed
12.0.1		24 September 2018	27 November 2018	Closed
12.0		17 September 2018	22 October 2018	Closed
11.4.1		9 July 2018	8 October 2018	Closed
11.4		29 May 2018	17 July 2018	Closed
11.3		29 March 2018	7 June 2018	Closed
11.2.6		19 February 2018	6 April 2018	Closed
11.2.5		23 January 2018	1 March 2018	Closed
11.2.1		13 December 2017	31 January 2018	Closed
11.2		2 December 2017	31 January 2018	Closed
11.1		31 October 2017	15 December 2017	Closed
11.0		19 September 2017	15 December 2017	Closed
10.2.2	Apple TV (4th generation)	19 July 2017	-	Open
10.2.1		15 May 2017	9 August 2017	Closed
10.2		27 March 2017	27 June 2017	Closed
10.1.1		23 January 2017	10 April 2017	Closed
10.1		12 December 2016	30 January 2017	Closed
10.0.1		24 October 2016	30 January 2017	Closed
10.0		13 September 2016	31 October 2016	Closed
9.2.2		18 July 2016	18 October 2016	Closed
9.2.1		16 May 2016	23 September 2016	Closed
9.2		21 March 2016	10 June 2016	Closed
9.1.1		25 January 2016	5 April 2016	Closed
9.1		8 December 2015	4 February 2016	Closed
9.0.1		9 November 2015	21 December 2015	Closed
9.0		29 October 2015	14 December 2015	Closed

Apple TV

Marketing Firmware	OS Firmware	For Device(s)	From	Until	Status
7.5	8.4.3	Apple TV (3rd generation)	24 March 2020	-	Open
7.4			24 September 2019	-	Open
7.3.1	8.4.2		22 July 2019	10 October 2019	Closed
7.3			13 May 2019	31 July 2019	Closed
7.2.2			12 December 2016	-	Open
7.2.1	8.4.1		25 February 2016	20 December 2016	Closed
7.2	8.3		8 April 2015	7 April 2016	Closed
7.1	8.2		9 March 2015	4 May 2015	Closed
7.0.3	8.1.3		27 January 2015	23 March 2015	Closed
7.0.2	8.1.1		17 November 2014	1 April 2015	Closed
7.0.1	8.1		20 October 2014	1 December 2014	Closed
7.0	8.0		17 September 2014	22 October 2014	Closed
6.2.1	7.1.2	Apple TV (2nd generation)	17 September 2014	-	Open
6.2		Apple TV (2nd generation), Apple TV (3rd generation)	30 June 2014	26 September 2014	Closed
6.1.1	7.1.1		22 April 2014	11 July 2014	Closed
6.1	7.1		10 March 2014	30 April 2014	Closed
6.0.2	7.0.6		21 February 2014	10 March 2014	Closed
	7.0.4		14 November 2013	21 February 2014	Closed
6.0.1	7.0.3		24 October 2013	14 November 2013	Closed
6.0	7.0.2		24 September 2013	29 October 2013	Closed
	7.0.1		20 September 2013	24 September 2013	Closed
5.3	6.1.4	Apple TV (3rd generation) (AppleTV3,2)	19 June 2013	21 September 2013	Closed
		Apple TV (2nd generation), Apple TV (3rd generation) (AppleTV3,1)	19 June 2013	-	Open
5.2.1	6.1.3	Apple TV (2nd generation), Apple TV (3rd generation)	19 March 2013	20 June 2013	Closed
5.2	6.1		28 January 2013	20 March 2013	Closed
5.1.1	6.0.1	Apple TV (2nd generation), Apple TV (3rd generation) (AppleTV3,1)	26 November 2012	20 March 2013	Closed
5.1	6.0		24 September 2012	20 March 2013	Closed
5.0.2	5.1.1		5 June 2012	20 March 2013	Closed
5.0.1			10 May 2012	?	Closed
5.0	5.1		7 March 2012	14 May 2012	Closed
4.4.4	5.0.1	Apple TV (2nd generation)	15 December 2011	8 March 2012	Closed
4.4.3			17 November 2011	11 January 2012(?)	Closed
4.4.2	5.0		24 October 2011	11 January 2012(?)	Closed
4.4.1			17 October 2011	?	Closed
4.4			4 October 2011	?	Closed
4.3	4.3		9 March 2011	?	Closed
4.2.2			11 May 2011	18 October 2011 (?)	Closed
4.2.1			22 March 2011	28 May 2011 (?)	Closed
4.2			9 March 2011	22 March 2011 (?)	Closed
4.1.1	4.2.1		14 December 2010	28 May 2011 (?)	Closed
4.1	4.2		22 November 2010	14 December 2010	Closed
4.0	4.1		29 September 2010	2 December 2010 (?)	Closed

Protocol

To request a SHSH blob from Apple, a simple HTTP request can be made. For a full description, see the separate articles SHSH Protocol and Baseband SHSH Protocol.

See Also

• APTicket
• Redsn0w
• iFaith
• TinyUmbrella

External Links

• Detailed background info from Saurik
• tsschecker
• savethemblobs