Solved! Undo Rollback android 7.0 to 6.0 (Huawei P9 lite)

Jun 17, 2018
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About a year ago a did a rollback on my Huawei P9lite from Android 7.0 to 6.0. Now i want to update it back to the latest version available.
The phone won't do it automatically and I also can't find the right package online to do it manually. Does anyone have some advice on how to do this?

The current build is VNS-L31C900B160 (It also used to be C432 for europe instead of C900)
The phone hasn't been tampered with aside from the rollback.

Thanks in advance
 
The problem was the "c900" code instead of c432 for europe. I solved it by changing my OEMinfo (or debrand it). As a novice this was a lot of work and also voids warranty.
 
Solution