Download Samsung Galaxy S21 SM-G991U1 - FKR - G991U1UEU3AUDD

Download the firmware flash for Samsung Galaxy S21 with the code is SM-G991U1. This firmware for the region with CSC code is FKR (FKR - 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 G991U1UEU3AUDD and Android version is R(Android 11). This firmware size is 5.96 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 G991U1UEU3AUDD
  • CSC VERSION G991U1OYM3AUDD
  • ANDROID VERSION R(Android 11)
  • BIT (BINARY/U/SW REV.) 3
  • SIZE 5.96 GB  Full Files
  • MD5 13da14e8abfc5209fae885071c595d9f
• 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 Samsung Galaxy S21 SM-G991U1 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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