I tried to update from 1.10.1 to this latest version, but it ends with this result (and now having still 18.104.22.168):
It's the message described in this thread: https://forum.fairphone.com/t/pencil2-fp2-update-problems-troubleshooting/19017
Verifying current system...
EMMC:/dev/block/platform/msm_sdcc.1/by-name/boot:[bunch of numbers]
has unexpected contents.
E: Error in /cache/fp_update_.zip
In fact I rooted my FP2.
As mentioned in this thread: is this really the cause for getting this error message after the automatically reboot?
If "yes", should I re-root my phone and start the update afterwards again?
... to not install the update manually ...