Download Samsung Galaxy S21 5G SM-G991N - KOO - G991NKSU4FXD3

Download the firmware flash for Samsung Galaxy S21 5G with the code is SM-G991N. This firmware for the region with CSC code is KOO (KOO - South Korea). 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 G991NKSU4FXD3 and Android version is U(Android 14). This firmware size is 7.05 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 G991NKSU4FXD3
  • CSC VERSION G991NOKR4FXD3
  • ANDROID VERSION U(Android 14)
  • BIT (BINARY/U/SW REV.) 4
  • SIZE 7.05 GB  Full Files
  • MD5 62023250cffe30732c28e5fc6a1cff5d
• Samsung Wallet
'모바일 신분증' 기능 추가
- 정부에서 공식 발급한 모바일 운전면허증과 국가보훈등록증을 온/오프라인 어디서나 실제 신분증과 동일하게 사용할 수 있습니다.
※ 모바일 신분증 아이콘이 있는 IC 카드로만 추가할 수 있습니다.
• 구글 보안 패치 적용
보안 관련 안정화 코드가 적용되었습니다.
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Child files of G991NKSU4FXD3 - If you want to download full firmware. Download one file ABOVE instead download all child files
Download Filename Download/Size MD5
AP_G991NKSU4FXD3_G991NKSU4FXD3_MQB79070364_REV01_user_low_ship_MULTI_CERT_meta_OS14.tar.md5.zip 14 dl
6.91 GB
MD5
BL_G991NKSU4FXD3_G991NKSU4FXD3_MQB79070364_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 5 dl
8.12 MB
MD5
CP_G991NKOU4FXD1_CP26252670_MQB78989593_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 7 dl
32.42 MB
MD5
CSC_OKR_G991NOKR4FXD3_MQB79070364_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 4 dl
24.02 MB
MD5
HOME_CSC_OKR_G991NOKR4FXD3_MQB79070364_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 2 dl
24.02 MB
MD5
 How to flash Samsung Galaxy S21 5G SM-G991N 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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