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Samsung Galaxy S21 5G (SM-G991U1) Android 15 Firmware (G991U1UESHHYI2) – USA | SamFrew

Home / Firmware / SM-G991U1 / TMB

Firmware G991U1UESHHYI2

Device Galaxy S21 5G

Model SM-G991U1

Region TMB

Country USA

OS Android 15

Release Date 9/7/2025

Upload Date 9/29/2025

PDA G991U1UESHHYI2

CSC G991U1OYMHHYI2

Changelist 30959686

Size 8152450992 bytes (approx. 7.6 GB)

TMB CSC Breakdown

Network ID

NW00156

Network Name

Anritsu

Network Country

Network Bands

any

Network ID

NW01305

Network Name

T-Mobile US

Network Country

United States of America

Network Bands

GSM 1900