To update the SPI EEPROM bootloader on a Compute Module 4.

• Modify the EEPROM configuration as desired
• Optionally, replace pieeprom.original.bin with a custom version. The default version here is the latest stable release recommended for use on Compute Module 4.

N.B The bootcode4.bin file in this directory is actually the recovery.bin file used on Raspberry Pi 4 bootloader update cards.

cd recovery
./update-pieeprom.sh
../rpiboot -d .