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 Download Samsung Galaxy S21 5G SM-G991U - ATT - G991USQS9EWI2

Download the firmware flash for Samsung Galaxy S21 5G with the code is SM-G991U. This firmware for the region with CSC code is ATT (ATT - 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 G991USQS9EWI2 and Android version is T(Android 13). This firmware size is 7.09 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 G991USQS9EWI2
  • CSC VERSION G991UOYN9EWI2
  • ANDROID VERSION T(Android 13)
  • BIT (BINARY/U/SW REV.) 9
  • SIZE 7.09 GB  Full Files
  • MD5 99d87f9038acab466ea539c7bb323a9a
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Child files of G991USQS9EWI2 - If you want to download full firmware. Download one file ABOVE instead download all child files
Download Filename Download/Size MD5
AP_G991USQS9EWI2_G991USQS9EWI2_MQB71335267_REV00_user_low_ship_MULTI_CERT_meta_OS13.tar.md5.zip 49 dl
6.04 GB 		MD5
BL_G991USQS9EWI2_G991USQS9EWI2_MQB71335267_REV00_user_low_ship_MULTI_CERT.tar.md5.zip 35 dl
75.43 MB 		MD5
CP_G991USQS9EWI2_CP25035390_MQB71335267_REV00_user_low_ship_MULTI_CERT.tar.md5.zip 28 dl
55.79 MB 		MD5
CSC_OYN_G991UOYN9EWI2_MQB71335267_REV00_user_low_ship_MULTI_CERT.tar.md5.zip 27 dl
62.88 MB 		MD5
HOME_CSC_OYN_G991UOYN9EWI2_MQB71335267_REV00_user_low_ship_MULTI_CERT.tar.md5.zip 17 dl
62.86 MB 		MD5
USERDATA_ATT_G991USQS9EWI2_G991USQS9EWI2_MQB71335267_REV00_user_low_ship_MULTI_CERT.tar.md5.zip 6 dl
750.95 MB 		MD5
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
All combinations
 Recent posts
 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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