Vendor Name: Sony
Device name: Xperia XZ2 compact
Device CodeName: xz2c
Version of /e/OS or Stock which existed previously; /e/OS-S 2.5-T community
Is the device Rooted / Not rooted: Not Rooted
Updated/Upgraded to 2.6.3-U, upgraded recovery first, and then a dirty upgrade of the rom and everything went well and everything is working.
HowTo : Sony Xperia XZ2 compact, How to update from 2.5-T A13 to 2.6.3-U A14