Firmware Direct Download Pricing News App

© 2015, 2026 Samfrew.com

Disclaimer: Flashing Samsung firmware is a risky process that can potentially brick your device. By flashing firmware, you are modifying the software on your device, and if anything goes wrong, your device may become unusable.

[email protected] Privacy Policy Terms of Service

Samsung Galaxy S24 (SM-S921U1) Android 15 Firmware (S921U1UEU4BYD9) – USA | SamFrew

Home / Firmware / SM-S921U1 / ATT

Galaxy S24

SM-S921U1 Firmware

PDAS921U1UEU4BYD9

ATTAndroid 15Released 4/15/2025

Firmware details

Technical package info

Key identifiers and package metadata for this release.

PDA: S921U1UEU4BYD9
CSC: S921U1OYM4BYD9
Country: USA
Changelist: 30959686
Upload date: 4/22/2025
Package size: 11.9 GB (12734250624 bytes)
File name: ATT-S921U1UEU4BYD9-20250422121921.zip

Download

Choose your download path

Fast download uses your premium allowance. Standard download works without premium bandwidth.

Package size11.9 GB

Checking accessLoading...

ATT CSC Breakdown

Network ID

NW00156

Network Name

Anritsu

Network Country

Network Bands

any

Network ID

NW00167

Network Name

AT&T Mobility

Network Country

United States of America

Network Bands

GSM 1900

Network ID

NW02038

Network Name

AT&T Mobility

Network Country

United States of America

Network Bands

GSM 850 / GSM 1900 / UMTS 850 / UMTS 1900 / LTE 700 / LTE 850 / LTE 1700 / LTE 1900 / LTE 2300 / 5G 850 / 5G 3700 / 5G 39000