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Firmware G991NKSU3EWB1

Device Galaxy S21 5G

Model SM-G991N

Region KOO

Country  KOREA

OS Android 13

Release Date 2/9/2023

Upload Date 2/14/2023

PDA G991NKSU3EWB1

CSC G991NOKR3EWB1

Changelist 25884018

Size 7173730234 bytes (approx. 6.7 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
KT
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