Download Samsung Galaxy S21 5G SM-G991U - SPR - G991USQU1AUA3

Download the firmware flash for Samsung Galaxy S21 5G with the code is SM-G991U. This firmware for the region with CSC code is SPR (SPR - United States). Please make sure the code is correct. You can check model code in Setting - About, in Download mode or you can find it by flipping your phone or among the things you found in the box. This product PDA version is G991USQU1AUA3 and Android version is R(Android 11). This firmware size is 6.49 GB.

This firmware is official from Samsung Cloud Server. Of course, we recommend you are using official Samsung tool like Samsung Smart Switch or Samsung Kies. Samfw.com will not responsible for any damage caused by using the files on this website

  • AP VERSION G991USQU1AUA3
  • CSC VERSION G991UOYN1AUA3
  • ANDROID VERSION R(Android 11)
  • BIT (BINARY/U/SW REV.) 1
  • SIZE 6.49 GB  Full Files
  • MD5 631ec83f1b82db47479076b31e16f602
  • CSC
  • BUILD DATE 20210121090805
  • ADD DATE 2021-01-30 20:43:31
  • SECURITY PATCH LEVEL 2021-01-01
  • DOWNLOADED 9
• The performance of Camera has been improved
• Wi-Fi connectivity and stability have been improved.
• The performance of Fingerprint recognition has been improved.
• Overall stability of functions improved.
• The security of your device has been improved.
Calling Bifröst...
Lastest combinations Galaxy S21 5G SM-G991U
Device Version Bit/SW REV. FA Change list
SM-G991U / Galaxy S21 5G G991USQU3AUD3 3 FAR0 CL21561395
SM-G991U / Galaxy S21 5G G991USQU2AUC3 2 FAR0 CL21221992
SM-G991U / Galaxy S21 5G G991USQU1AUA5 1 FAR0 CL20796681
 How to flash Samsung Galaxy S21 5G SM-G991U firmware

1. Extract (unzip) the Samsung firmware file. Recommended using WinRAR or 7-Zip

2. Download Odin Tool 3.13.1

3. Extract Odin ZIP file

4. Open Odin execute file

5. Reboot Samsung phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)

6. Connect you Samsung phone and wait until you get a blue sign in Odin

7. Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots

8. Make sure re-partition is NOT ticked

9. Click the START button, sit back and wait few minutes

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