apt update, apt upgrade, automatic kernel change (downgrade) to 4.19

Hi @ppBBB , the kernel meta package for 4.19.x might be installed, check with:

debian@bbb-pwr01-ser09:~$ dpkg --list | grep bbb.io-kernel
ii  bbb.io-kernel-4.19-ti-am335x         1.20220416.0-0~buster+20220416              all          BeagleBoard.org 4.19-ti for am335x
ii  bbb.io-kernel-tasks                  1.20220416.0-0~buster+20220416              all          BeagleBoard.org Kernel Branche

If you want to switch to v5.10.x or one of the others just do:

sudo apt update
sudo apt install bbb.io-kernel-5.10-ti-am335x
sudo apt remove bbb.io-kernel-4.19-ti-am335x --purge
sudo reboot

Regards,