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0 pointscodedokode4h ago0 comments

Where did they get the code for SecureROM? Also, why is the ROM code so large, I thought the BootROM should contain the minimal code to boot from flash memory and that's all.

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1 comments · 1 top-level

ACCount374h ago

Do you want to break out a flash programmer and disassemble the entire smartphone whenever someone bricks it via firmware?

If not, you need to have unbrick-capable DFU straight in BootROM.

Which typically means: ROM code that carries an entire USB stack, as well as means of validating and booting executables from the USB stack.

An alternative would be to have BootROM recovery off MicroSD, but, iPhone lmao. They didn't chase the trend of "no expandable storage" - they created it.

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