This Firmware flash for Samsung Galaxy S21 5G with the Model Number is SM-G991B. Firmware Region is Sri Lanka and CSC code is SLK . Make sure the Model Number are correct with you device. You can check the Model Number in Setting - About phone (Model Number), If phone can't start you can find it by flipping your phone or among the things you found in the box. This Firmware PDA is G991BXXU3AUDA with OS R(Android 11) and the Firmware are build on Fri 30 Apr 2021 13:01:01 pm.

Download Firmware Samsung Galaxy S21 5G (SM-G991B)

AP Version: G991BXXU3AUDA
CSC Version: G991BOXM3AUDA
Android Version: R(Android 11)
Region: SLK
Country: Sri Lanka
Binary: 3
Security patch level : 2021-05-01

Build Date: 2021-04-30 13:01:01
Size: 6.98 GB
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About Phone:

Samsung Galaxy S21 5G Android smartphone. Announced Jan 2021. Features 6.2″ display, Exynos 2100 chipset, 4000 mAh battery, 256 GB storage, 8 GB RAM, Corning Gorilla Glass Victus.

Admin May 01, 2021 SM-G991B, SLK

What's new

• The performance of Camera has been improved
• Enhanced Quick Share
 - Improve file sharing between Galaxy devices using Quick Share.
• The security of your device has been improved.

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How to flash firmware

Extract (unzip) the SM-G991B_SLK_G991BXXU3AUDA......G991BXXU3AUDA.zip file. using WinRAR or 7-Zip.
Download Odin Tool 3.14.1
Extract Odin and open it.
Reboot Samsung Phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)
Connect you Samsung Phone and wait until you get a BLUE sign in Odin.
Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots.
Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.
Click the start button, wait for Odin to say 'PASS' in a GREEN sign. Once the flash is complete, your phone will reboot, and you can disconnect your phone from the PC.

The Samsung Galaxy S series is a line of high-end Android mobile devices produced by Samsung Electronics. The series consisted initially of smartphones and the first device, the Samsung Galaxy S, was announced in March 2010 and released for sale in June of that year.

Source: wikipedia.org

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