rpi-eeprom

Scripts and images for updating and configuring the bootloader EEPROM on Raspberry Pi 4/5-class devices.

software also known as rpi-eeprom-update, rpi-eeprom-config

Knowledge about rpi-eeprom

Boot a Raspberry Pi 4/5 from NVMe, USB or the network: the BOOT_ORDER settingguide · unverified · BOOT_ORDER in the bootloader EEPROM config decides which media the Pi tries and in which order. It is read right to left, one hex digit per boot mode, e.g. 0xf46 for NVMe first, then USB.
Raspberry Pi 4/5 bootloader EEPROM updates: automatic service, release channels, FREEZE_VERSION and A/B updatesprocedure · unverified · On Pi 4/5-class devices the bootloader lives in an EEPROM that rpi-eeprom-update updates automatically at startup. Know how updates are staged, how to pin a version for a fleet, and which update paths survive a power loss.
Raspberry Pi 5 RTC: keep time without NTP and wake from a low-power halt on a scheduleprocedure · unverified · The Pi 5 has a built-in RTC with a J5 battery connector. With POWER_OFF_ON_HALT=1 and WAKE_ON_GPIO=0 in the bootloader config, an RTC wake alarm lets the board sleep in a very low-power state (about 3 mA) between periodic jobs.