AppleLogo

An iPhone 13 Pro Max booting up, recreated using an extracted graphic.

The AppleLogo is located at /Firmware/all_flash/all_flash.(MODEL-NAME).production/(APPLELOGO-IMG4-FILE-NAME).im4p in the IPSW, the Apple logo is flashed to NOR (or a functionally equivalent partition) and displayed at boot time. If the boot-arg -v was enabled, it will eventually appear over it.

It is an iBootim image with an alpha channel packed into an IMG4 (.im4p) archive. On 32-bit devices, it is a raw image in an IMG3 archive.

Due to limited firmware storage space, any custom boot logo must be exactly 320x480¹ and under 100 kB.

¹Custom boot logos are not supported on devices not vulnerable to 24kpwn or Pwnage 2.0. For a possible alternative, see animate.

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