@chimera in case people don't know what that means
Get the latest official RaspberryPi OS image boot your pi from it.
When it's done with it's initial setup. Enter in a terminal
sudo apt update && sudo apt full-upgrade -y
sudo rpi-eeprom-update
# If it shows that there is a newer eeprom
# version than the installed one do
sudo rpi--eeprom-update -a
sudo reboot
# if you are up to date than there's
# nothing to do. You can
# continue with Chimera Linux











