I recently bought a new to me S21 Ultra which had EE branded firmware on with CSC code EVR. I wanted to change this to an unbranded UK code, I've done this with previous handsets to be able to participate in beta programmes, so it's not something I'm new to. However, I firstly changed to EUX and could not open Samsung Memebers app, it stated this app is not available in this country/region or something of the like. So I changed it to BTU which gave me BTU/BTU,BTU/EUX/EVR, Samsung Members app worked fine however I couldn't seem to pull through the latest October update.
I've sinced flashed it via Odin but worried I will not be able to get OTA updates now, does the third CSC value (EUX) which relates to the region have anything to do with this? Can anyone with a factory BTU S21 Ultra share their CSC codes please so I can compare? I've read that there was a release problem with handsets coming pre loaded with EUX code and not changing to BTU, would be interesting to see other people's CSC codes.