just finished. quite complicated. need to convert to german version b4 flashing. confirmm plus chop will wipe data. but wont trip knox so its ok.
If you needed to wipe data to update it. You likely have done it incorrectly and
may have changed your device CSC with no way to reverse it back without rooting or visiting Customer Service.
You can actually do so without changing
CSC if you used
Home_CSC for the CSC file.
This will keep your data.
In other words if your CSC is changed, it might not be able to change it back to our country CSC to receive any updates. Samsung Pay might not have our SG promotions and the Samsung Members app for your support might be all in UK region settings.
You can check this in your settings->about device->Software Info and under Service Provider SW ver it should have something like
XXX/XXX,XXX/XXX
SG CSC should be either XSP/MM1/STH/SIN for the first 3 XXX