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Thanks Igor, it works. My question was more about if it is a good idea to overwrite the GRUB_CMDLINE_LINUX_DEFAULT from well known location /etc/default/grub. It potentially may confuse people.

It looks I've found it. /etc/default/grub.d/98-armbian.cfg replaces GRUB_CMDLINE_LINUX_DEFAULT. Is it a good idea? Don't know

Hi, I'm running Armbian UEFI x86 on a Radxa Rock X4 and I'm struggling to find, where to put the kernel parameters. The armbian-config SY003 suggests /boot/armbianEnv.txt. So I've put a line with extraargs=, but it is ignored. Then I've tried /etc/default/grub adding the parameters to GRUB_CMDLINE_LINUX_DEFAULT= and then doing update-grub, but it is also ignored. Where should I put the kernel parameters?

Now the combination of current u-boot and edge kernel works just fine: linux-image-edge-meson64-23.02.2 contains kernel 6.2.0-rc3-meson64, linux-u-boot-khadas-vim3-current-23.02.2 contains u-boot 2022.07. Concerning your recovery question, do you run from emmc, or SD card? SD card is easier, insert into another arm linux, do chroot and downgrade/upgrade uboot and kernel. If you run from emmc, you can flash a minimal system on SD card and insert it. SD card should is booted booted before emmc. Then you chroot and repair. Hope, it helps.