Hey, usually Android U should be available for fp4 and now its gone out of the official install doc. The community build is still there? Why its gone and do you know when it will come back? Thanks a lot.
Regain your privacy! Adopt /e/OS the deGoogled mobile OS and online services
There was a major issue with using an eSIM in a Fairphone 4 after the update to 2.6.3, so for the time being, they withdrew that update until that is fixed. No idea when.
The bug seems fixed to me, and U will come back with 2.7 for FP4. In the dev channel you can find v. 2.7 rc2.