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Difference between revisions of "X-Gold 618 Unlock"
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The [[N90ap|iPhone 4]] now uses the X-Gold 618. Unlike the [[X-Gold 608]], the baseband now requires a signature akin to Apple's SHSH blobs for firmware files, so downgrading an updated baseband, provided there is a bootloader exploit, will be tougher. |
The [[N90ap|iPhone 4]] now uses the X-Gold 618. Unlike the [[X-Gold 608]], the baseband now requires a signature akin to Apple's SHSH blobs for firmware files, so downgrading an updated baseband, provided there is a bootloader exploit, will be tougher. |
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| + | Currently, unsigned code execution has been achieved on the device and the ability to insert a custom AT command has been demonstrated. The bootrom has also been dumped. |
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==Possible Methods== |
==Possible Methods== |
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Revision as of 18:49, 6 July 2010
The iPhone 4 now uses the X-Gold 618. Unlike the X-Gold 608, the baseband now requires a signature akin to Apple's SHSH blobs for firmware files, so downgrading an updated baseband, provided there is a bootloader exploit, will be tougher.
Currently, unsigned code execution has been achieved on the device and the ability to insert a custom AT command has been demonstrated. The bootrom has also been dumped.
Possible Methods
Class 1
- Find an exploit in the bootrom to break the chain of trust.
- Improve by several orders of magnitude the NCK brute forcer, and find a way to extract the CHIPID and NORID
- Find the theorized algorithm of NCK generation
Class 2
- Use a SIM hack such as the TurboSIM Unlock
- Find a way to patch running memory to "unlock" the phone on every bootup. This is how ultrasn0w works.
- Find an exploit in the Baseband Bootloader so you can downgrade the baseband, then use an unlocking payload, similar to ultrasn0w.
