BIOS setup

[ergox]

How to enter BIOS to change boot order from Hard disk to boot from USB
(to change distro to Endeavour, Mint or Fossapup64 in order to make Qemu work,
& cos I'm fed up with Manjaro wining about dependencies; too long time on each update or new program. Rolling release NO thanks!).

[tophneal]

There's no BIOS for the PBP. Sounds like you're affected by the faulty UBoot in the Manjaro shipped with the 2022 batch. You have a few options to boot something other than Manjaro:

1. install towboot to your SPI (some people don't want to do this, but from my exp towboot is pretty sold, it just won't boot BSP images, like the ChromiumOS ones.)

2. Turn off your PBP, remove the bottom cover, flip the eMMC switch to disable it, place another bootable SD into the PBP, once the PBP starts to boot from the SD flip the eMMC switch back on. You should then be able to install another image to your eMMC from the booted SD.