The specific Galaxy S21 Ultra SM-G998B U1 Firmware Download Package comes with a Stock ROM of Galaxy S21 Ultra SM-G998B U1 Security Patch Level 2020-12-01 (1 December 2020). This helps you to bypass FRP lock and revert from the root and custom ROM.
Samsung Galaxy S21 Ultra SM-G998B Binary 1 Android 11 R Portugal MEO – G998BXXU1ATLF
There are various reasons to flash “Stock Firmware on Galaxy S21 Ultra SM-G998B U1“. For example, your phone will be stuck or hang on the logo. You want to remove the FRP lock from it.
If you’re going to hard reset your phone and you cannot access the recovery menu. But most of the problems that cause flashing stock ROM are below.
The Advantages Of Galaxy S21 Ultra SM-G998B U1 Stock ROM:
- Flash Stock ROM to solve the boot loop issue
- Update and Downgrade
- Unroot or Fix Bugs on the phone
- To solve the lag or stutter
- By flashing Stock ROM, you can fix software issues.
- Revert back to stock to get your warranty.
Galaxy S21 Ultra SM-G998B U1 Stock ROM Details:
|Model||SM-G998B Binary 1 U1, S1, Bit 1|
|Region / Country||Portugal|
|Android version||Android 11 R|
|Operator||Clean MEO (without logo, operator apps)|
|Build Date||Thu, 10 Dec 2020|
|Security Patch Level||2020-12-01 (1 December 2020)|
|Download||Google Drive||Android File Host|
Download Galaxy S21 Ultra SM-G998B U1 Boot.img
boot.img S21 Ultra SM-G998B G998BXXU1ATLF to root on Magisk without TWRP
How To Install Galaxy S21 Ultra SM-G998B U1 Stock Firmware:
Download the Odin and USB Drivers on your PC. Follow the below link to install the firmware using the Odin Flash tool.
How To Flash Samsung Stock Firmware With ODIN
1: Download and Install Samsung USB Driver on your computer. If Samsung USB Driver is already installed on your computer, then Skip this Step.
2: Download and extract the Galaxy S21 Ultra SM-G998B U1 Firmware files on your computer.
3: Now, Switch off your Smartphone.
4: After switching off the phone, you need to boot into Download Mode. To boot into download mode.
Press and hold Volume Down, Home and Power button at the same time for 5-8 seconds until download mode is active.
5: In the Download mode, you will be able to see a Warning Yellow Triangle Sign. In this situation, you have to press the Volume Up key to continue.
6: Now, Download and open Odin. Then connect your Smartphone to the computer.
7: Once you have connected the Smartphone to the computer, Odin will automatically recognize the device and show the “Added” message at the lower-left panel.
8: Once Odin detects your device, click on the PDA button, and select the Firmware.tar file.
9: Now, click on the Start button in Odin to begin the Flashing.
10: Flashing usually takes 30-50 seconds to complete the process on your Phone.
Once the Firmware process is completed you will be able to see a Green Box with Pass written on it in Odin. During this process, the Smartphone will reboot automatically.
Once you see, the Pass message in Odin, you can disconnect your Device from the computer.
The flashing process will begin and should take about 10–12 minutes. It may take some time for your device to reboot, but don’t be alarmed.
When your Galaxy S21 Ultra SM-G998B finally boots up, you should now be running your desired firmware.
If you want to check that the correct firmware is installed, head to Settings –> About Phone –> Software Information. The firmware number is located under the “Baseband version.”
- Please read and understand the Full Guide before flashing “Galaxy S21 Ultra SM-G998B U1 Firmware“.
- Use these instructions at your own risk. We will not be responsible for everything that happens to your device, resulting from the use of information in this guide.
- Before flashing, Stock ROM must have a 70–80% charge.