P355MUBS1CTK3 – GALAXY Tab A firmware

Build P355MUBS1CTK3 is a security update for the GALAXY Tab A (SM-P355M) on Android 7. It first appeared on Samsung's servers on Dec 11, 2020 (method) and has reached 3 regions so far. It keeps bootloader bit 1, so downgrading to the previous build P355MUBS1CTK2 is still possible. Samsung still serves this file.

Model
SM-P355M
Android
Android 7
Type
Security
Bootloader bit
1
First released
Dec 11, 2020
Regions
3

Rollout timeline by region

The date each region code (CSC) first received P355MUBS1CTK3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
COOColombiaDec 11, 2020day 0P355MUBS1CTK3/P355MUUB1CTJ1/P355MUBU1CQJ1
CHOChileDec 16, 2020+5 daysP355MUBS1CTK3/P355MUUB1CTJ1/P355MUBU1CQJ1
TPAPanamaDec 16, 2020+5 daysP355MUBS1CTK3/P355MUUB1CTJ2/P355MUBU1CQJ1

Download and release notes

samloader download -m SM-P355M -r COO -v P355MUBS1CTK3/P355MUUB1CTJ1/P355MUBU1CQJ1

Samsung's release notes and security patch level for this update: SM-P355M / COO on doc.samsungmobile.com. What each part of the build number means: decode P355MUBS1CTK3.