Addon for @maxsub and the bricked R2S: I tested USB boot from u-boot cmdline on my RV2, and it works. Here's how: usb start setenv devtype usb setenv devnum 0:1 setenv prefix boot/ #setenv fdtfile spacemit/x1_orangepi-r2s.dtb setenv fdtfile spacemit/k1-orangepi-rv2.dtb setenv bootargs "console=ttyS0,115200 root=/dev/sda1" ls ${devtype} ${devnum} ${prefix} load ${devtype} ${devnum} ${ramdisk_addr_r} ${prefix}uInitrd load ${devtype} ${devnum} ${kernel_addr_r} ${prefix}Image load ${devtype} ${devnum} ${fdt_addr_r} ${prefix}dtb/${fdtfile} booti ${kernel_addr_r} ${ramdisk_addr_r} ${fdt_addr_r} In case you have a blank u-boot-env, here's mine attached // HTH printenv.cap

@maxsub You mean the boot.cmd (source for boot.scr) from the Xunlong Ubuntu image for R2S? I'll attach it below // HTH boot.cmd

OK, so that went reasonably fast and produced the 4 kernel debs. The linux-libc-dev-edge-rockchip64 didn't install due to conflict with the (current/stable) linux-libc-dev package - I think this is expected - but the rest of the kernel packages have been succesfully installed and the dkms error seems resolved.

Eh, I can try the 7.0 rc package and see how they behave, as long as it's 6.19 or later is fine. Thanks for the pointers.

No. edge will give you 7.0-rc3 since it was bumped recently. You can try to revert this commit to get 6.19. No guarantee it works, nor any support will be given. https://github.com/armbian/build/pull/9445