I tried performing the update on FP3, from 1.9.1-s, but my device is now stuck on boot screen.
I have just created a topic for this:
Device stuck on boot screen after 1.10-s update - FP3.
Vendor Name: Fairphone
Device name: FP3
Device CodeName: FP3
Version of /e/OS which existed previously: 1.9-dev
The device is: Not rooted