: When it launched in 2020, it was one of the first affordable phones to bring 5G connectivity to the masses.
The technical string you provided refers to a specific firmware version for the . Based on these details, here is the "story" behind this specific device and software configuration: The Device: Samsung Galaxy A51 5G (SM-A516U) Samsung A51 5G SM-A516U Q (Android 10) (BIT 3) ...
: In Samsung's security architecture, you can update to a higher binary number, but you cannot downgrade to a lower one. : When it launched in 2020, it was
: If you are on BIT 3, you can flash any official firmware that is also BIT 3 or higher. If a newer update moves the phone to BIT 4, you will never be able to go back to a BIT 3 version of Android. : If you are on BIT 3, you