You want to know how to boot your Revolution Pi device from USB? Then you are at the right place!
So on a CM4/CM4S the configuration is better but also different from the previous CM3 modules. The boot order can be set in the firmware. The manual can be found here:
https://github.com/raspberrypi/usbboot/blob/master/recovery/README.md
The "boot.conf" must be edited in between. This is roughly the procedure:
git clone https://github.com/raspberrypi/usbboot.git cd usbboot cd recovery vim boot.conf [...] BOOT_ORDER=0xf26415 [...] # Build boot EEPROM with modified boot.conf ./update-pieeprom.sh # Flash boot EEPROM ../rpiboot -d . # Connect RevPi with Micro USB cable and switch on power supply # If a monitor is connected, a green screen appears after successful completion