A3051XXS4BUD2 – Galaxy A40s firmware
Build A3051XXS4BUD2 is a security update for the Galaxy A40s (SM-A3051)
on Android 10. It first appeared on Samsung's servers on Apr 29, 2021 (method) and has reached
1 region so far. It keeps bootloader bit 4, so downgrading to the previous build A3051XXS4BUB1 is still possible. Samsung still serves this file.
- Model
- SM-A3051
- Android
- Android 10
- Type
- Security
- Bootloader bit
- 4
- First released
- Apr 29, 2021
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A3051XXS4BUD2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
BRI | Taiwan | Apr 29, 2021 | day 0 | A3051XXS4BUD2/A3051OLO4BUB1/A3051XXS4BUB1 |
Download and release notes
samloader download -m SM-A3051 -r BRI -v A3051XXS4BUD2/A3051OLO4BUB1/A3051XXS4BUB1Samsung's release notes and security patch level for this update: SM-A3051 / BRI on doc.samsungmobile.com. What each part of the build number means: decode A3051XXS4BUD2.