X133DXS5BZI3 – Galaxy Tab A11 firmware
Build X133DXS5BZI3 is a security update for the Galaxy Tab A11 (SM-X133)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 21, 2026 (method) and has reached
10 regions 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 X133DXU4BZH3 is blocked. Samsung still serves this file.
- Model
- SM-X133
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 5
- First released
- Sep 21, 2026
- Regions
- 10
Rollout timeline by region
The date each region code (CSC) first received X133DXS5BZI3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KOO | South Korea | Sep 21, 2026 | day 0 | X133DXS5BZI3/X133KOO5BZI3/X133DXS5BZI3 |
EGY | Egypt | Sep 27, 2026 | +6 days | X133DXS5BZI3/X133OJM5BZI3/X133DXS5BZI3 |
MWD | Morocco | Sep 27, 2026 | +6 days | X133DXS5BZI3/X133OJM5BZI3/X133DXS5BZI3 |
XID | Indonesia | Sep 27, 2026 | +6 days | X133DXS5BZI3/X133OLE5BZI3/X133DXS5BZI3 |
XSG | United Arab Emirates | Sep 27, 2026 | +6 days | X133DXS5BZI3/X133OJM5BZI3/X133DXS5BZI3 |
XSP | Singapore | Sep 27, 2026 | +6 days | X133DXS5BZI3/X133OLM5BZI3/X133DXS5BZI3 |
MXO | Mexico | Sep 28, 2026 | +7 days | X133DXS5BZI3/X133OWO5BZI3/X133DXS5BZI3 |
ZTO | Brazil | Sep 28, 2026 | +7 days | X133DXS5BZI3/X133OWO5BZI3/X133DXS5BZI3 |
BRI | Taiwan | Oct 14, 2026 | +23 days | X133DXS5BZI3/X133OZS5BZI3/X133DXS5BZI3 |
TGY | Hong Kong | Oct 14, 2026 | +23 days | X133DXS5BZI3/X133OZS5BZI3/X133DXS5BZI3 |
Download and release notes
samloader download -m SM-X133 -r KOO -v X133DXS5BZI3/X133KOO5BZI3/X133DXS5BZI3Samsung's release notes and security patch level for this update: SM-X133 / KOO on doc.samsungmobile.com. What each part of the build number means: decode X133DXS5BZI3.