X306BXXSDDZH1 – Galaxy Tab Active5 5G firmware
Build X306BXXSDDZH1 is a security update for the Galaxy Tab Active5 5G (SM-X306B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 7, 2026 (method) and has reached
33 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to X306BXXSCDZG1 is blocked. Samsung still serves this file.
- Model
- SM-X306B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 13
- First released
- Sep 7, 2026
- Regions
- 33
Rollout timeline by region
The date each region code (CSC) first received X306BXXSDDZH1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
XID | Indonesia | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLEDDZH1/X306BXXSDDZH1 |
GLB | Philippines (Globe) | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
TEL | Australia (Telstra) | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
THL | Thailand | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XME | Malaysia | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XNZ | New Zealand | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XSA | Australia | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XSP | Singapore | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XTC | Philippines | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
XXV | Vietnam | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOLMDDZH1/X306BXXSDDZH1 |
CAU | Caucasus | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
EUX | Europe (Multi-CSC) | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
EUY | Europe (Multi-CSC) | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
SKZ | Kazakhstan | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
INS | India | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
EGY | Egypt | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
ILO | Israel | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
KSA | Saudi Arabia | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
MID | Middle East | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
MWD | Morocco | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
PAK | Pakistan | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
TUN | Tunisia | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
TUR | Turkey | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
XFA | South Africa | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
XSG | United Arab Emirates | Sep 7, 2026 | day 0 | X306BXXSDDZH1/X306BOJMDDZH1/X306BXXSDDZH1 |
ARO | Argentina | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
CHO | Chile | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
COO | Colombia | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
GTO | Guatemala | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
MXO | Mexico | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
PEO | Peru | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
ZTO | Brazil | Sep 10, 2026 | +3 days | X306BXXSDDZH1/X306BOWODDZH1/X306BXXSDDZH1 |
TGY | Hong Kong | Sep 14, 2026 | +7 days | X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1 |
Download and release notes
samloader download -m SM-X306B -r EUX -v X306BXXSDDZH1/X306BOXMDDZH1/X306BXXSDDZH1Samsung's release notes and security patch level for this update: SM-X306B / EUX on doc.samsungmobile.com. What each part of the build number means: decode X306BXXSDDZH1.