Bootloader barebox

https://source.mnt.re/reform/mnt-reform-barebox
barebox 2026.08.0-dirty documentation
README-mnt.md
Installation
Always check 
if and 
of paths are correct. Use 
lsblk to verify.
Setup SD card
sudo dd if=pocket-reform-system-rk3588.img of=/dev/mmcblk0 bs=1M oflag=direct status=progress
sudo dd if=barebox-mnt-pocket-reform-rk3588.img of=/dev/mmcblk0 seek=64 oflag=direct status=progress
Test bootloader from SD card
Boot from SD card
Make backup of MMC bootloader:
sudo dd if=/dev/mmcblk0 bs=1M count=10 of=emmc-backup.bin
 
Erase MMC bootloader first stage to force boot form SD card bootloader:
sudo dd if=/dev/zero bs=512 seek=64 of=/dev/mmcblk0 count=2 oflag=direct
Turn off and on again.
Press 
m to get barebox boot menu
 Press 
2 Detect bootsources and test if you can boot your normal OS.
From main OS install new bootloader to MMC
sudo dd if=/dev/mmcblk1 of=/dev/mmcblk0 bs=1M count=10 oflag=direct
Turn it off.
Take out SD card.
Boot again - it should boot your normal OS using barebox.