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

Home / Firmware / SM-G991U / USC

Firmware G991USQSHHYI1

Device Galaxy S21 5G

Model SM-G991U

Region USC

Country USA

OS Android 15

Release Date 9/3/2025

Upload Date 10/6/2025

PDA G991USQSHHYI1

CSC G991UOYNHHYI1

Changelist 30959686

Size 8403651552 bytes (approx. 7.8 GB)

USC CSC Breakdown

Network ID

NW01420

Network Name

U.S. Cellular

Network Country

United States of America

Network Bands

LTE 700 / LTE 850

Network ID

NW01421

Network Name

USC Test

Network Country

Network Bands

any

Network ID

NW01860

Network Name

U.S. Cellular

Network Country

United States of America

Network Bands

LTE 700 / LTE 850

Network ID

NW01927

Network Name

USC Test CDMA

Network Country

Network Bands

any