: 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.
The device is protected with improved security. Build Number : A516USQUBGWC1. Android version : T(Android 13) Release Date : 2023- samsung.com Samsung Galaxy A51 5G (SM-A516U) - Software Version
The is the carrier-locked version of the Galaxy A51 5G sold in the United States by major providers like AT&T and T-Mobile. Samsung A51 5G SM-A516U Q (Android 10) (BIT 3) ...
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)
: When it launched in 2020, it was one of the first affordable phones to bring 5G connectivity to the masses. : If you are on BIT 3, you
: In Samsung's security architecture, you can update to a higher binary number, but you cannot downgrade to a lower one.
: You can find this number in your "Baseband version" (found in Settings > About Phone > Software Information). It is typically the 5th character from the right in the version string (e.g., A516USQU 3 BTJ4). Summary Table Model Samsung Galaxy A51 5G (SM-A516U) Original OS Android 10 (Q) Latest OS Android 13 (One UI 5.1) Bootloader BIT 3 (No downgrading to BIT 1 or 2) Support Status Support ended June 2024 Galaxy A51 5G (SM-A516U) - Notify Update Build Number : A516USQUBGWC1
The term (also known as Binary 3 or SW Rev. 3 ) refers to the version of the phone's Bootloader .