for now I've stopped kernel upgrades
sudo apt-mark hold linux-image-current-rockchip64 linux-dtb-current-rockchip64 linux-u-boot-rockpi-4b-current
can resume with
sudo apt-mark unhold linux-image-current-rockchip64 linux-dtb-current-rockchip64 linux-u-boot-rockpi-4b-current
did this since the option to disable armbian kernel upgrades in armbian-config is not working in my case for some reason
Gwolf2u got a reaction from 陈少举 in Latest Armbian - 25.5.0-trunk.185 no longer booting on Rock 4b