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    Samsung Galaxy S20 Ultra (SM-G988B) - MSR - G988BXXU1ATD3 firmware

    Samsung Galaxy S20 Ultra firmware G988BXXU1ATD3 is the Android 10 build for the Samsung Galaxy S20 Ultra (model SM-G988B), released by Samsung for Serbia (Telenor) (MSR). It was built on 19 April 2020, carries the 2020-04-01 Android security patch, has changelist 18335124. The package combines system build G988BXXU1ATD3 (AP/PDA) with CSC build G988BOXM1ATD3 for the MSR region code. SamMobile added this file to the firmware archive on 22 April 2020.

    Country
    Model SM-G988B
    Product Code MSR
    Security Patch 2020-04-01
    OS Version Android 10
    PDA G988BXXU1ATD3
    CSC G988BOXM1ATD3
    Build Date 2020-04-19
    Changelist 18335124
    Join to Download Fast download

    G988BXXU1ATD3 for other regions and carriers

    The same G988BXXU1ATD3 build is also available for these SM-G988B regions:

    Other SM-G988B firmware for Serbia (Telenor) (MSR)

    All SM-G988B firmware for MSR · All Samsung Galaxy S20 Ultra (SM-G988B) firmware

    How to flash G988BXXU1ATD3 on the Samsung Galaxy S20 Ultra (SM-G988B)

    We recommend updating through Samsung's own tools: over-the-air (Settings › Software update) or Samsung Smart Switch on a PC. Flash the full firmware with Odin only when you are sure about the risks. A wrong region or a failed flash can brick the device, and SamMobile is not responsible for any damage.

    1. Download the firmware package above and extract the ZIP. It contains the AP (PDA), BL, CP and CSC files, plus a HOME_CSC file.
    2. Download and extract Odin on a Windows PC, and install the Samsung USB drivers if the PC does not detect the phone.
    3. Switch the device off and boot it into Download mode (usually Volume Up + Volume Down while connecting the USB cable, or Volume Down + Bixby + Power on older models).
    4. Open Odin. The ID:COM box turns blue when the device is connected.
    5. Load the files in their slots: BL, AP, CP and CSC. Use HOME_CSC to keep your apps and data, CSC to wipe the device.
    6. Leave Re-Partition unticked and click Start. The device reboots when Odin shows PASS. The first boot after a flash can take a few minutes.

    Step-by-step PDFs: 5-file firmware and 1-file firmware.

    What the build numbers mean

    PDA / AP (G988BXXU1ATD3) is the Android system build; its last three characters encode the year, month and revision. CSC (G988BOXM1ATD3) is the region and carrier configuration, and CP is the modem firmware. The product code MSR identifies the region or carrier this package was made for (Serbia (Telenor)). Flashing a package for a different product code changes carrier features and can be refused by the bootloader, so pick the one that matches the CSC shown under Settings › About phone › Software information.