Difference between revisions of "IMG4 File Format"

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There is a img4 file (sep-firmware.img4) found in IPSWFILE/Firmware/all_flash/all_flash.DEVICEIDENTIFIER.production on any [[A7]] (64bit) devices. It has a IMG40 header, but also refers to IM4P.
 
There is a img4 file (sep-firmware.img4) found in IPSWFILE/Firmware/all_flash/all_flash.DEVICEIDENTIFIER.production on any [[A7]] (64bit) devices. It has a IMG40 header, but also refers to IM4P.
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The IMG40 structure is as follows:
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<pre>
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sequence [
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0: string "IMG40"
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1: string encryption type - IM4P
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2: string type - sepi (Secure Enclave Processor Image), ...
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3: ...
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]
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</pre>
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{{stub|software}}
 
{{stub|software}}

Revision as of 12:38, 26 December 2013

There is a img4 file (sep-firmware.img4) found in IPSWFILE/Firmware/all_flash/all_flash.DEVICEIDENTIFIER.production on any A7 (64bit) devices. It has a IMG40 header, but also refers to IM4P.

The IMG40 structure is as follows:

sequence [
   0: string "IMG40"
   1: string encryption type - IM4P
   2: string type - sepi (Secure Enclave Processor Image), ...
   3: ...
]


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