I think we have solved this issue. Please update the latest u-boot.
sudo apt-get install rockpi4b-rk-u-boot-latest
sudo /usr/local/sbin/rockpi4b_upgrade_bootloader.sh
and type YES.
I think we have solved this issue. Please update the latest u-boot.
sudo apt-get install rockpi4b-rk-u-boot-latest
sudo /usr/local/sbin/rockpi4b_upgrade_bootloader.sh
and type YES.