Okay - Update worked. AOSP keyboard crashed permanently until Google Apps were installed.
Now I’m trying to find a way to partitionize my phone - Can someone please help me out?
Cheers!
EDIT: Ok, found it myself: https://fairphone.zendesk.com/hc/en-us/articles/200887199-How-do-I-upgrade-to-the-unified-storage-partition-for-first-edition-Fairphone-owners-