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Samsung Galaxy S21 5G (SM-G991U1) Android 15 Firmware (G991U1UESJHZB1) – USA | SamFrew

Home / Firmware / SM-G991U1 / USC

Galaxy S21 5G

SM-G991U1 Firmware

Latest firmware

PDAG991U1UESJHZB1

USCAndroid 15Released 2/24/2026

Firmware details

Technical package info

Key identifiers and package metadata for this release.

PDA: G991U1UESJHZB1
CSC: G991U1OYMJHZB1
Country: USA
Changelist: 30959686
Upload date: 3/23/2026
Package size: 7.6 GB (8155547984 bytes)
File name: USC-G991U1UESJHZB1-20260323145740.zip

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Package size7.6 GB

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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