A105NKOU5BUD1 – Galaxy A10 firmware

Build A105NKOU5BUD1 is a feature update for the Galaxy A10 (SM-A105N) on Android 10. It first appeared on Samsung's servers on May 6, 2021 (method) and has reached 1 region so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to A105NKOU4BTJ1 is blocked. Samsung still serves this file.

Model
SM-A105N
Android
Android 10
Type
Feature
Bootloader bit
5
First released
May 6, 2021
Regions
1

Rollout timeline by region

The date each region code (CSC) first received A105NKOU5BUD1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
KOOSouth KoreaMay 6, 2021day 0A105NKOU5BUD1/A105NKOO5BUD1/A105NKOU5BUD1

Download and release notes

samloader download -m SM-A105N -r KOO -v A105NKOU5BUD1/A105NKOO5BUD1/A105NKOU5BUD1

Samsung's release notes and security patch level for this update: SM-A105N / KOO on doc.samsungmobile.com. What each part of the build number means: decode A105NKOU5BUD1.