Originally Posted by geekmaster
If it has the 5.1.0 kernel, when downgrading to mmcblk0p1 5.0.0 you should also downgrade to kernel 5.0.0.
The 5.1.0 update will install a new kernel when it updates the main partition.
5.0.4 also has a different kernel.
I realize you keep yourself swamp'd with work, but...
If you can find the time, could you put a simple table on the wiki of the various combinations that you are aware of?