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(Added BDID characteristics. I would additionally change the long bulleted list to a wikitable, but I accidentally refreshed my page a few minutes ago while doing so, so I've lost all my motivation to that for the moment)
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The '''Board ID''' of a device (also known as '''BORD''', '''BDID''', or '''ApBoardId''') is a 6-bit value (although usually represented as <code>uint8_t</code>) that represents multiple characteristics of the logic board. In a BuildManifest, this value is found in the <code>ApBoardId</code> tag.
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The '''BORD''' ('''BOaRD''') tag is an 8-bit unsigned integer (<code>uint8_t</code>) that contains the Board ID of the device that the firmware image is supposed to be ran on. It allows Apple to make sure you are not running another device's firmware files on an incompatible device, probably to prevent using old exploits. What is odd about this tag is that the same values have been used many times. It can be found in the BuildManifest.plist inside an IPSW next to <code>ApBoardID</code>.
  
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== Board ID Characteristics ==
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The following table charts each of a Board ID's 6 bits to known board characteristics.
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{| class="wikitable"
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!
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! Bit 5
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! Bit 4
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! Bit 3
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! Bit 2
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! Bit 1
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! Bit 0
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|-
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! Meaning
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| ?
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| ?
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| ?
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| '''Eureka/Karoo'''
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| '''Form Factor'''
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| '''Production Type'''
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|-
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! Values
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| ?
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| ?
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| ?
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|
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* <code>0</code>: Eureka
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* <code>1</code>: Karoo
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|
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* <code>0</code>: Form Factor 'A'
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* <code>1</code>: Form Factor 'B'
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|
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* <code>0</code>: Production (MLB)
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* <code>1</code>: Development (DEV)
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|}
   
 
== Devices ==
  
== Devices ==
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** [[N112AP|iPod touch (7th generation)]]: 0x16
  
** [[N112AP|iPod touch (7th generation)]]: 0x16
   
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{{stub|firmware}}
  
 
[[Category:Firmware Tags]]
  
[[Category:Firmware Tags]]

Revision as of 19:43, 18 April 2020

The Board ID of a device (also known as BORD, BDID, or ApBoardId) is a 6-bit value (although usually represented as uint8_t) that represents multiple characteristics of the logic board. In a BuildManifest, this value is found in the ApBoardId tag.

Board ID Characteristics

The following table charts each of a Board ID's 6 bits to known board characteristics.

Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Meaning ? ? ? Eureka/Karoo Form Factor Production Type
Values ? ? ?
  • 0: Eureka
  • 1: Karoo
  • 0: Form Factor 'A'
  • 1: Form Factor 'B'
  • 0: Production (MLB)
  • 1: Development (DEV)

Devices

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