4.19.42+ kernel broke the file system, LZ4 issue, how to revert to prev kernel?

[edralzar]

hi, I came across this post while searching for origin/solution for a FATAL message around LZ4 during deb package update via xbian-config. The process ends with a message complaining LZ4 compression is active while kernel 4.19.75+ doesn't support it.

I am currently on a 4.9.x kernel, is the correct solution to hold the linux-image-bcm2836 package for now? if not, how can I upgrade the kernel via xbian-config without putting the system at risk? for instance it seems `xbian-compress` is not always a good idea, so what would I need to check before I run such commands?

thanks in advance, and sorry for hijacking this post