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 bypass the 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 instance, if your phone gets stuck on the logo and you need to remove the FRP lock from it.
The Advantages Of Stock ROM:
- Fix boot loop issue
- Update and Downgrade
- Unroot or Fix Bugs
- To solve the lag or stutter
- Fix software issues.
- Revert to stock firmware
Pre-requirements:
- Supported Phone: Galaxy S21 Ultra SM-G998B U1
- Charge your mobile: You may no less than a half charge.
- Laptop or PC.
- Backup Android Phone
- Download and install the Samsung USB Driver
- Download Odin’s Latest version
Galaxy S21 Ultra SM-G998B U1 Stock ROM Details:
SM-G998B U1 Portugal MEO – G998BXXU1ATLF:
Model | SM-G998B Binary 1 U1, S1, Bit 1 |
Region / Country | Portugal |
Language | Multi-Language |
Android version | Android 11 R |
Operator | Clean MEO (without logo, operator apps) |
PDA | G998BXXU1ATLF |
CSC | G998BOXM1ATLF |
Product code | MEO |
Build Date | Thu, 10 Dec 2020 |
Security Patch Level | 2020-12-01 (1 December 2020) |
Size | 7.5 GB |
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
Download | Google Drive |
How To Install Galaxy S21 Ultra SM-G998B U1 Stock Firmware:
1: Install the Samsung USB Driver on your pc.
2: Download and extract the Galaxy S21 Ultra SM-G998B U1 Firmware files on your computer.
3: Now, Switch off your Smartphone.
4: 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 Download mode a Warning Yellow Triangle Sign appeares . Press Volume Up to proceed.
6: Open Odin. Then, connect your phone to the pc.
7: After connecting the smartphone to the computer, Odin will automatically recognize the device and display the “Added” message in the lower left panel.
8: Click the PDA button and select the Firmware.tar file.
9: Now, click the Start button in Odin to begin the Flashing.
10: Flashing usually takes 30-50 seconds to complete on your Phone.
Once you spot the “Pass” message in Odin, you can unplug your device from the computer.
When your Galaxy S21 Ultra SM-G998B finally boots up, you should run your desired firmware.
To verify the installed firmware, go to Settings –> About Phone –> Software Information. Check the firmware number under “Baseband version.”
Disclaimer:
- Read and understand the Full Guide before flashing.”Galaxy S21 Ultra SM-G998B U1 Firmware“.
- Use these instructions at your own risk. We are not liable for any outcomes on your device due to following the information in this guide.
- Phone must have a 70–80% charge.