A300MUBS1BRK1 – GALAXY A3 firmware

Build A300MUBS1BRK1 is a security update for the GALAXY A3 (SM-A300M) on Android 5. It first appeared on Samsung's servers on Feb 17, 2019 (method) and has reached 1 region so far. It keeps bootloader bit 1, so downgrading to the previous build A300MUBS1BRK2 is still possible. Samsung still serves this file.

Model
SM-A300M
Android
Android 5
Type
Security
Bootloader bit
1
First released
Feb 17, 2019
Regions
1

Rollout timeline by region

The date each region code (CSC) first received A300MUBS1BRK1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TGPParaguayFeb 17, 2019day 0A300MUBS1BRK1/A300MUWM1BRK1/A300MUBS1BQB1

Download and release notes

samloader download -m SM-A300M -r TGP -v A300MUBS1BRK1/A300MUWM1BRK1/A300MUBS1BQB1

Samsung's release notes and security patch level for this update: SM-A300M / TGP on doc.samsungmobile.com. What each part of the build number means: decode A300MUBS1BRK1.