A266BXXUCDZJ5 – Galaxy A26 5G firmware
Build A266BXXUCDZJ5 is a feature update for the Galaxy A26 5G (SM-A266B)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 26, 2026 (method) and has reached
14 regions so far. It keeps bootloader bit 12, so downgrading to the previous build A266BXXUCDZJ6 is still possible. Samsung still serves this file.
- Model
- SM-A266B
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 12
- First released
- Oct 26, 2026
- Regions
- 14
Not yet released in 6 regions that are still on an older build: GLB, THL, XME, XNZ, XTC, XXV.
Rollout timeline by region
The date each region code (CSC) first received A266BXXUCDZJ5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
SWC | Switzerland | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
TUR | Turkey | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
BOG | France (Bouygues) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
EUX | Europe (Multi-CSC) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
EUY | Europe (Multi-CSC) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
MEO | Portugal (MEO) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
MOT | Slovenia (Telekom) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
MSR | Serbia | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
PLS | Poland (Plus) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
PRT | Poland (Play) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
SFR | France (SFR) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
SIM | Slovenia (A1) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
TOP | Serbia/Montenegro | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
VIP | Croatia (A1) | Oct 26, 2026 | day 0 | A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5 |
Download and release notes
samloader download -m SM-A266B -r EUX -v A266BXXUCDZJ5/A266BOXMCDZJ5/A266BXXUCDZJ5Samsung's release notes and security patch level for this update: SM-A266B / EUX on doc.samsungmobile.com. What each part of the build number means: decode A266BXXUCDZJ5.