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Samsung Galaxy S21 5G (SM-G991U) Android 15 Firmware (G991USQSHHYI1) – USA | SamFrew

Home / Firmware / SM-G991U / SPR

Firmware G991USQSHHYI1

Device Galaxy S21 5G

Model SM-G991U

Region SPR

Country USA

OS Android 15

Release Date 9/3/2025

Upload Date 9/29/2025

PDA G991USQSHHYI1

CSC G991UOYNHHYI1

Changelist 30959686

Size 8399990160 bytes (approx. 7.8 GB)

SPR CSC Breakdown

Network ID

NW01159

Network Name

T-Mobile US

Network Country

United States of America

Network Bands

LTE 850 / LTE 1900

Network ID

NW01668

Network Name

T-Mobile US

Network Country

United States of America

Network Bands

LTE 850 / LTE 1900

Network ID

NW01895

Network Name

T-Mobile US

Network Country

United States of America

Network Bands

LTE 850 / LTE 1900

Network ID

NW01160

Network Name

SPR Test

Network Country

Network Bands

any

Network ID

NW01951

Network Name

T-Mobile US

Network Country

United States of America

Network Bands

LTE 850 / LTE 1900