Download Samsung Galaxy S21 5G SM-G991N - KOO - G991NKSS3CVI3

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 G991NKSS3CVI3 and Android version is S(Android 12). This firmware size is 6.28 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 G991NKSS3CVI3
  • CSC VERSION G991NOKR3CVI3
  • ANDROID VERSION S(Android 12)
  • BIT (BINARY/U/SW REV.) 3
  • SIZE 6.28 GB  Full Files
  • MD5 ca7f21139a371c6223edc5c3bcc56832
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Child files of G991NKSS3CVI3
Download Filename Download/Size MD5
AP_G991NKSS3CVI3_G991NKSS3CVI3_MQB56521682_REV01_user_low_ship_MULTI_CERT_meta_OS12.tar.md5.zip 0 dl
6.14 GB
MD5
BL_G991NKSS3CVI3_G991NKSS3CVI3_MQB56521682_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 1 dl
8.04 MB
MD5
CP_G991NKOU3CVH1_CP22640474_MQB54670798_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 2 dl
32.35 MB
MD5
CSC_OKR_G991NOKR3CVI3_MQB56521682_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 0 dl
23.79 MB
MD5
HOME_CSC_OKR_G991NOKR3CVI3_MQB56521682_REV01_user_low_ship_MULTI_CERT.tar.md5.zip 0 dl
23.78 MB
MD5

Download child files section is under beta testing. If you got any error please report Telegram support Group

 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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