SM-G991N Firmware download for Samsung Galaxy S21 5G.

This Galaxy S21 5G has main three model numbers SM-G991B/DS (International), SM-G991W, SM-G991U and SM-G991U. So it is important to download the right stock ROM file as SM–G991N firmware. Then you need to compare it with your device Model Number as SM-G991N.

Download the latest firmware (Stock ROM) for Samsung Galaxy S21 5G. You can find the SM-G991N Firmware version numbers as PDA Code and CSC code in the below list on this page. So, It should be a product code country-specific. Galaxy S21 5G has to be released most current android with compatible the device. So, It has to be an Android S(12) update for the device.

More Flash file: Samsung Firmware

Why Need SM-G991N Firmware

The ROM flash file is necessary when you want to do some of the following software related tasks:

• Upgrade or downgrade device’s firmware.
• To Fix Android update compatibility issues.
• Reinstall the Android OS.
• Device stability improvements, bug fixes.
• If need improvements to performance.
• If Rooted device need to Unroot then you need Stock ROM flash file.
• To Fix Android issues and apps compatibility issues.
• Fix unknown baseband error.
• Fix Errors like boot loop, hanging on the Samsung logo and rebooting continually.
• If you are need custom android development.
• Recover malware, virus, and spyware and more.

Samsung SM-G991N Firmware Download

Android S(12)

File List

Mostly latest firmware has been improved Overall stability of your device. And the system security has been further enhanced. But If you need to downgrade the Android version. Then, Download and install or flash previous android version.

How to Flash

Download Samsung Smart Switch and create a full backup of your device. Because data will be deleted throughout this operation, ensure that you have a comprehensive backup.

Once your device has finished backing up, Turn off your smartphone and enter download mode by simultaneously pushing the Volume down and power buttons. If you followed the instructions successfully, your smartphone should display this screen.

Open Odin after connecting your device to your computer. After that add the files for the related field in Odin.. So, everything is fine, click start button. Few second after you should get the PASS message. That’s it.

Galaxy S21 5G Specifications

These specification related models SM-G991N.

• Released in January 2021. January
• Device Dimensions are 151.7 x 71.2 x 7.9 mm.
• Weight is 169 g and displays size as 6.2 inches with Corning Gorilla Glass Victus Protection.
• Released with Android Android 11, One UI 3.1.
• Processor chipset is Qualcomm SM8350 Snapdragon 888 5G (5 nm), CPU Octa-core.
• Internal Storage 128GB and 8GB RAM or 256GB and 8GB RAM.
• Main Camera 64MP and Front camera 10 MP.
• Non-removable battery Li-Po 4000 mAh with Fast battery charging.
• USB Type-C 2.0
• FM radio (Snapdragon model only)