It's important to note that the approach demonstrated here uses NO iBOOT code or ANY other Apple code at all. No apple software needs to be shipped, patched or rooted. We literally do not need iBoot at all.

The team took on the additional work to build a completely fresh bootloader, side stepping obvious legal and technical moves the OEM could make to mitigate Linux adoption on the A13 iPhone 11. This is the most durable approach and represents a nearly blob free approach to running Linux of iPhone 11.