A066BXXS6BZE1 – Galaxy A06 5G firmware
Build A066BXXS6BZE1 is a security update for the Galaxy A06 5G (SM-A066B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on May 12, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 5 to 6: once installed, the device no longer accepts firmware with bit 5 or lower, so a downgrade to A066BXXS5BZB8 is blocked. Samsung still serves this file.
- Model
- SM-A066B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 6
- First released
- May 12, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A066BXXS6BZE1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | May 12, 2026 | day 0 | A066BXXS6BZE1/A066BODM6BZE1/A066BXXS6BZE1 |
Download and release notes
samloader download -m SM-A066B -r INS -v A066BXXS6BZE1/A066BODM6BZE1/A066BXXS6BZE1Samsung's release notes and security patch level for this update: SM-A066B / INS on doc.samsungmobile.com. What each part of the build number means: decode A066BXXS6BZE1.