I bought a refurbished S23 Ultra off Back Market and it is still on Android 14 and says my system is up to date when I try to update to Android 15, despite the security settings saying otherwise. The same thing happens with Google Play system update, which hasn't been updated since June 2024. I know the S23 Ultra is compatible with Android 15 so clearly something is wrong.
I checked the service provider software version and the active CSC seems to be CPW, which is Carphone Warehouse I believe. Might this have anything to do with my issue?
