Brunswick on Nostr: Every commercial phone's bootloader is hardware locked. It is to prevent the OS from ...

Every commercial phone's bootloader is hardware locked. It is to prevent the OS from injecting a "TSR" through the loader and to assure the "ROM"'s signature is valid. To do this, it needs to be run from a secure environment. The processor doesen't allow the application to modify the bootloader area without a key. Its possible to prevent even a jtag or other debug hardware interface from overriding this with "fuses" on the silicon. The only option you have as a consumer is something open source like a pinephone, or a bootloader that allows unsigned images like google pixel. If privacy is your concern, open source only. If you can live with spyware likely built into your cellular modem and bootloader, then use graphene or other open source roms. Why anyone with privacy in mind would use iphone baffles me.