This Firmware flash for Samsung Galaxy S21 Ultra 5G with the Model Number is SM-G998N. Firmware Region is South Korea and CSC code is KOO . Make sure the Model Number are correct with you device. You can check the Model Number in Setting - About phone (Model Number), If phone can't start you can find it by flipping your phone or among the things you found in the box. This Firmware PDA is G998NKSS3CVI3 with OS S(Android 12) and the Firmware are build on Thu 22 Sep 2022 18:24:38 pm.

Download Firmware Samsung Galaxy S21 Ultra 5G (SM-G998N)

AP Version: G998NKSS3CVI3
CSC Version: G998NOKR3CVI3
Android Version: S(Android 12)
Region: KOO
Country: South Korea
Binary: 3

Build Date: 2022-09-22 18:24:38
Size: 6.43 GB
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About Phone:

Samsung Galaxy S21 Ultra 5G Android smartphone. Announced Jan 2021. Features 6.8″ display, Exynos 2100 chipset, 5000 mAh battery, 512 GB storage, 16 GB RAM, Corning Gorilla Glass Victus.

Admin Sep 22, 2022 SM-G998N, KOO

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How to flash firmware

Extract (unzip) the SM-G998N_KOO_G998NKSS3CVI3......G998NKSS3CVI3.zip file. using WinRAR or 7-Zip.
Download Odin Tool 3.14.1
Extract Odin and open it.
Reboot Samsung Phone in Download Mode (hold Home + Power + Volume Down buttons / hold Volume Down + Bixby buttons then plug-in cable)
Connect you Samsung Phone and wait until you get a BLUE sign in Odin.
Add the 1 file Samsung firmware to AP/PDA or 4 files Samsung firmware (AP/BL/CP/CSC) to it's slots.
Do NOT tick any extra boxes. The only options to be ticked are F.Reset Time and Auto-Reboot.
Click the start button, wait for Odin to say 'PASS' in a GREEN sign. Once the flash is complete, your phone will reboot, and you can disconnect your phone from the PC.

The Samsung Galaxy S series is a line of high-end Android mobile devices produced by Samsung Electronics. The series consisted initially of smartphones and the first device, the Samsung Galaxy S, was announced in March 2010 and released for sale in June of that year.

Source: wikipedia.org

Other Firmwares

#	Model	Version	Region	OS	Size
1	SM-G998N	G998NKSU3DVL2	SKC	T(Android 13)	6.66 GB	Download
2	SM-G998N	G998NKSU3DVL2	KOO	T(Android 13)	6.66 GB	Download
3	SM-G998N	G998NKSU3DVKC	SKC	T(Android 13)	6.66 GB	Download
4	SM-G998N	G998NKSU3DVKC	LUC	T(Android 13)	6.66 GB	Download
5	SM-G998N	G998NKSU3DVKC	KTC	T(Android 13)	6.66 GB	Download
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