Samsung Galaxy S21 5G is a premium handset with impressive features. Since it’s a well-reputed handset with a satisfying performance we don’t get many software-related issues. But there can be issues that could only solve by flashing SM-G991B firmware.

Updated: This page has now been included in Android 12. As a result, you may get it here.

Samsung SM-G991B firmware download

Here you find the original SM-G991B firmware that we get directly from the Samsung cloud. But make sure to download the correct version of the firmware. Here we have the Galaxy S21 SM-G991B flash file. And that is the official firmware version of Samsung galaxy s21 in the DBT region. Which is Germany.

If you have no idea what might be your CSC code for the region or what might be the firmware version of your galaxy s21 5g, go to settings–>about the device and you can find it out

More: SM-G998B firmware download

Why flash SM-G991B firmware

• Install custom ROMs
• Upgrade or downgrade the OS version
• Malware, virus, spyware removal
• Remove bloatware
• Bootloop issues
• Soft brick situation

Download Samsung Galaxy S21 SM-G991B firmware

Model No: SM-G991B
Device: Galaxy S21 5G
PDA/AP: G991BXXU5CVDD
CSC: G991BOXM5CVDD
Android: Version 12 (S)
Country: United Kingdom
Carrier Code: BTU
BIT (BINARY/U/SW REV.): 5
File Name: SM-G991B-BTU-G991BXXU5CVDD-fac.zip
File Size: 7.28 GB
Download file: Start Download through this link

Model No: SM-G991B
Device: Galaxy S21 5G
PDA/AP: G991BXXU3AUHB
CSC: G991BOXM3AUHB
Android: VERSION 11 (R)
Country: Germany
Carrier Code: DBT
BIT (BINARY/U/SW REV.): 3
File Name: SM-G925A-G925AUCS7ERC1-G925AATT7ERC1-ATT-4-File.zip
File Size: 7.01 GB
Download file: Start Download through this link

How to flash Galaxy S21 SM-G991B flash file

For the flashing, there are few methods you could use. You can try Samsung Smart Switch or Samsung Kies as well as the same old method that uses the Samsung Odin tool.

Prerequisites

• Download and install Samsun drivers
• Samsung SM-G991B firmware download
• Samsung Odin tool latest version
• USB cable
• Windows PC

1. Turn off your galaxy s21
2. Boot it into the download mode
3. Run the Odin tool on the PC
4. Connect the device to the PC using the USB cable
5. When the device is recognized by the Odin, it will show an “Added” message.
6. The ID: COM on ODIN will change to blue.
7. Go to the firmware file and extract it into a new folder.
8. Now add the CP, AP, BL files to the respected fields of Odin
9. Add a CSC file if you want to factory reset the device. Or else add HOME_CSC
10. Check the boxed in front of the F.Reset and Auto Reboot in the options.
11. Click the start button and start the flashing

Warning – The device will be auto-reboot several times while flashing SM-G991B firmware. Therefore don’t panic. Furthermore, make sure to keep the device connected to the PC until it’s done.