I downloaded the ARM64 verison of the XFCE Manjaro this morning and use both Rasberry PI Imager and balena-etcher to write the image to my USB-SSD.
Neither will boot. stuck in a loop on the bootloader looking for some firmware file that is missing.
My RPI4 has the latest eeprom image and will boot USB-SSDs with other os’s like RPI OS 32bit and Ubuntu Mate 64bit.
Am I missing a step? Questions in the forum seem to get answered that it’s a eeprom issue. Not my case.