This looks like a bootrom exploit - the stage before iBoot - that verifies signa...

NightMKoder on Sept 27, 2019 | parent | context | favorite | on: Checkm8 – Bootrom exploit for many iOS devices

This looks like a bootrom exploit - the stage before iBoot - that verifies signatures of the firmware. The code for it is hard burned - read only from software. This can only be fixed with new hardware. https://www.theiphonewiki.com/wiki/Bootrom