Pinebook Pro won´t boot either from eMMC or microSD

[axel]

I'm guessing that you don't have a linux box and card reader to do the fsck on/with
Hard to say why journal is bad, but since it is ro, fsck will work on it (in pbp)
sudo fsck.ext4 /dev/mmcblk1p2
Sometimes, when video is wrong, vt also fails to display
This makes it more likely that the kernel upgrade was somehow wrong

I managed to boot debian from SD card. I suppose it is safe to unmount /dev/mmcblk1p2?
Running the command shows "/dev/mmcblk1p2 is mounted. Cannot continue, aborting"

Also if the kernel update went wrong, any easy way to reverse that?

Thanks for all your help