This image release repo is obsolete. Please visit the new image release repo:
ROCK (Pi) 4A/4B(2018) 4A+/4B+/4 SE(2022) - https://github.com/radxa-build/rockpi-4b
ROCK (Pi) 4C(2020) - https://github.com/radxa-build/rockpi-4c
ROCK (Pi) 4C+(2022) - https://github.com/radxa-build/rockpi-4cplus
The old ROCK Pi 4 boards images can be found: