Samsung Galaxy S21 5G Korea SM-G991N Android 11 Stock ROM KOO – G991NKSU3AUHB

Samsung Galaxy S21 5G Korea SM-G991N Android 11 Stock ROM (Flash File). Free download ROM for Samsung SM-G991N. This firmware for the region with CSC code is KOO ( G991NKSU3AUHB – G991NOKR3AUHB ). You can use it to update and downgrade the device, fixing the device facing bootloop issue or any software issue.

Samsung Galaxy S21 5G Korea SM-G991N Android 11 Stock ROM KOO - G991NKSU3AUHB

Download:

Model: SM-G991N

Region: KOO

AP Version: G991NKSU3AUHB

CSC Version: G991NOKR3AUHB

Android: 11

Download Link: Unlimited

Tool:

Download Samsung Odin Tool – New Version

Cautions:

  • Make sure that Samsung Galaxy battery is charged more than 30%.
  • Download and extract Samsung Odin 3 latest version.
  • Always check Device model number security Patch level and binary version before downloading the firmware file.
  • Also install a latest version of Samsung USB Driver before installing firmware file.