Hi Mr chromebox I’ve this board and when I flash the full firmware rom I get a black screen.
The script allows me to flash the pirika rom. I have of course the back-up rom thanks to your script. Can I flash the palutena full rom ? I’ve already restored the back-up rom with linux and flashrom, so back to square one.
no, the script uses coreboot_edk2-palutena-mrchromebox_20250427.rom for your device.
PALUTENA is a variant of PIRIKA (same board different SKU), but different firmware image.
I would reflash and confirm which image is used. If it fails to boot, then reflash the UEFI ROM via suzyq. If still fails, I can provide a debug image to see what’s going on
So I’ve reflashed with the script and cleared the nvram before rebooting and it worked this time. 
Thank you.
why? it’s cleared when you flash the firmware for the first time.