SM-S721B Firmware

Latest firmware

PDAS721BXXSCDZF3

IUSAndroid 16Released 6/10/2026

Firmware details

Technical package info

Key identifiers and package metadata for this release.

PDA: S721BXXSCDZF3
CSC: S721BOWOCDZF3
Country: Mexico
Changelist: 33419270
Upload date: 6/12/2026
Package size: 20.3 GB (21787848112 bytes)
File name: IUS-S721BXXSCDZF3-20260612010610.zip

Networks supported by this firmware

MexicoCSC code IUS4 carriers in 1 country

What is CSC?

CSC stands for Consumer Software Customization (sometimes "Country Sales Code"). Samsung firmware ships with carrier- and region-specific configs; the networks listed below are what this CSC was built to support out of the box.

AT&T

MCCMNC334090NWIDNW00855

AT&T Mexico

LTE 850LTE 1700UMTS 1700

AT&T / Unefon

MCCMNC334050NWIDNW00614

AT&T Mexico