After the update, it does not load

[cooker]

I updated the bionic to 0.6.49, after rebooting the system does not load at all

I wouldn't update the rock64 past 0.6.44 (maybe 0.6.45). Focus is currently on the rockpro64, as they are generated from the same source, so something may (and probably has) for the rock64 on the way. But thanks for the report.

This means that we can no longer do "apt upgrade"?
Or is there another way to just block the version update to keep the 0.6.44?
I'm in the same situation, I have a rock64 1GB with the stretch minimal 0.6.44 image installed.

Thanks

https://forum.pine64.org/showthread.php?...8#pid37868
It works for me.
I use it on the "development" board, test any update/upgrade or new installation there first, when all things done, swap the sd card with the "production" board.