S7270ZSUAOB1 – GALAXY ACE 3 firmware

Build S7270ZSUAOB1 is a security update for the GALAXY ACE 3 (GT-S7270) on Android 4. It first appeared on Samsung's servers on Feb 24, 2015 (method) and has reached 2 regions so far. It keeps bootloader bit 30, so downgrading to the previous build S7270XXUANK1 is still possible. Samsung still serves this file.

Model
GT-S7270
Android
Android 4
Type
Security
Bootloader bit
30
First released
Feb 24, 2015
Regions
2

Not yet released in 10 regions that are still on an older build: AFG, KSA, MWD, SER, THL, XEV, XFA, XSG, XSP, XXV.

Rollout timeline by region

The date each region code (CSC) first received S7270ZSUAOB1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
BRITaiwanFeb 24, 2015day 0S7270ZSUAOB1/S7270OZSAOB1/S7270ZSUAOB1
TGYHong KongFeb 24, 2015day 0S7270ZSUAOB1/S7270OZSAOB1/S7270ZSUAOB1

Download and release notes

samloader download -m GT-S7270 -r BRI -v S7270ZSUAOB1/S7270OZSAOB1/S7270ZSUAOB1

Samsung's release notes and security patch level for this update: GT-S7270 / BRI on doc.samsungmobile.com. What each part of the build number means: decode S7270ZSUAOB1.