X300XXUADZE3 – Galaxy Tab Active5 firmware
Build X300XXUADZE3 is a feature update for the Galaxy Tab Active5 (SM-X300)
on Android 16 (One UI 8). It first appeared on Samsung's servers on May 27, 2026 (method) and has reached
6 regions so far. It keeps bootloader bit 10, so downgrading to the previous build X300XXSACZB3 is still possible. Samsung still serves this file.
- Model
- SM-X300
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 10
- First released
- May 27, 2026
- Regions
- 6
Rollout timeline by region
The date each region code (CSC) first received X300XXUADZE3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EUX | Europe (Multi-CSC) | May 27, 2026 | day 0 | X300XXUADZE3/X300OXMADZE3/X300XXUADZE3 |
EUY | Europe (Multi-CSC) | May 27, 2026 | day 0 | X300XXUADZE3/X300OXMADZE3/X300XXUADZE3 |
XAR | USA (Cellular South) | May 28, 2026 | +1 day | X300XXUADZE3/X300OXMADZE3/X300XXUADZE3 |
SKZ | Kazakhstan | May 31, 2026 | +4 days | X300XXUADZE3/X300OXMADZE3/X300XXUADZE3 |
MXO | Mexico | Jun 18, 2026 | +22 days | X300XXUADZE3/X300OWOADZE3/X300XXUADZE3 |
XSP | Singapore | Jun 21, 2026 | +25 days | X300XXUADZE3/X300OLMADZE3/X300XXUADZE3 |
Download and release notes
samloader download -m SM-X300 -r EUX -v X300XXUADZE3/X300OXMADZE3/X300XXUADZE3Samsung's release notes and security patch level for this update: SM-X300 / EUX on doc.samsungmobile.com. What each part of the build number means: decode X300XXUADZE3.