The specific Galaxy S21 Ultra SM-G998B U3 Firmware Download Package comes with a Stock ROM of Galaxy S21 Ultra SM-G998B U3 Security Patch Level 2021-12-01 (1 December 2021). This helps you to bypass the FRP lock and revert from the root and custom ROM.
Samsung Galaxy S21 Ultra SM-G998B Binary 3 Android 11 R Brazil ZTO – G998BXXU3AUIE
There are various reasons to flash “Stock Firmware on Galaxy S21 Ultra SM-G998B U3“. 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.
- Return to stock for warranty coverage.
Pre-requirements:
- Supported Phone: Galaxy S21 Ultra SM-G998B U3
- 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 U3 Stock ROM Details:
SM-G998B U3 Brazil ZTO – G998BXXU3AUIE:
| Model | SM-G998B Binary 3 U3, S3, Bit 3 |
| Region / Country | Brazil |
| Language | Multi-Language |
| Android version | Android 11 R |
| Operator / Carrier | Clean ZTO (no logo, carrier apps) |
| PDA | G998BXXU3AUIE |
| CSC | G998BOWO3AUIF |
| MODEM CP Version | G998BXXU3AUIF |
| product code | ZTO |
| Build Date | 13 Sep 2021 |
| Security Patch Level | 2021-10-01 (October 1, 2021) |
| Size | 6.7 GB |
| Download | Google Drive | Android File Host |
How To Install Galaxy S21 Ultra SM-G998B U3 Stock Firmware:
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 U3 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 will appear. simply press the Volume Up key.
6: Now, Download and open Odin. Then connect your Smartphone to the computer.
7: Odin will detect the device and show the “Added message in the lower-left panel.”.
8: Click the PDA button, and choose the Firmware.tar file.
9: Click the Start button in Odin to begin the Flashing.
10: Flashing usually takes 30-50 seconds to complete the process on your Phone.
Once you see the Pass message in Odin, you can disconnect your device from the pc.
When your Galaxy S21 Ultra SM-G998B U3 finally boots up, you should now be running 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 U3 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 the information in this guide.
- Phone must have a 70–80% charge.