Home / Firmware / SM-G991N / KOO

Firmware G991NKSS3AUIN

Device Galaxy S21 5G

Model SM-G991N

Region KOO

Country KOREA

OS Android 11

Release Date 9/28/2021

Upload Date 10/14/2021

PDA G991NKSS3AUIN

CSC G991NOKR3AUIN

Changelist 22520955

Size 6387415472 bytes (approx. 5.9 GB)

KOO CSC Breakdown

Network ID

NW01125

Network Name

SK Telecom

Network Country

South Korea

Network Bands

UMTS 2100 / LTE 850 / LTE 1800 / LTE 2100 / LTE 2600 / 5G 3500 / 5G 28000

Network ID

NW01126

Network Name

SK Telecom Roaming

Network Country

South Korea

Network Bands

UMTS 2100 / LTE 850 / LTE 1800 / LTE 2100 / LTE 2600 / 5G 3500 / 5G 28000

Network ID

NW00649

Network Name

Network Country

South Korea

Network Bands

UMTS 2100 / LTE 900 / LTE 1800 / LTE 2100

Network ID

NW00650

Network Name

KT Roaming

Network Country

South Korea

Network Bands

UMTS 2100 / LTE 900 / LTE 1800 / LTE 2100

Network ID

NW00680

Network Name

LG U+

Network Country

South Korea

Network Bands

LTE 850 / LTE 2100 / LTE 2600 / 5G 3500

Network ID

NW00681

Network Name

LG U+ Roaming

Network Country

South Korea

Network Bands

LTE 850 / LTE 2100 / LTE 2600 / 5G 3500