X300XXSCDZG1 – Galaxy Tab Active5 firmware
Build X300XXSCDZG1 is a security update for the Galaxy Tab Active5 (SM-X300)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 29, 2026 (method) and has reached
6 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to X300XXSBDZF3 is blocked. Samsung still serves this file.
- Model
- SM-X300
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 12
- First released
- Jul 29, 2026
- Regions
- 6
Rollout timeline by region
The date each region code (CSC) first received X300XXSCDZG1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EUX | Europe (Multi-CSC) | Jul 29, 2026 | day 0 | X300XXSCDZG1/X300OXMCDZG1/X300XXSCDZG1 |
EUY | Europe (Multi-CSC) | Jul 29, 2026 | day 0 | X300XXSCDZG1/X300OXMCDZG1/X300XXSCDZG1 |
SKZ | Kazakhstan | Jul 29, 2026 | day 0 | X300XXSCDZG1/X300OXMCDZG1/X300XXSCDZG1 |
XSP | Singapore | Jul 29, 2026 | day 0 | X300XXSCDZG1/X300OLMCDZG1/X300XXSCDZG1 |
MXO | Mexico | Jul 30, 2026 | +1 day | X300XXSCDZG1/X300OWOCDZG1/X300XXSCDZG1 |
XAR | USA (Cellular South) | Aug 2, 2026 | +4 days | X300XXSCDZG1/X300OXMCDZG1/X300XXSCDZG1 |
Download and release notes
samloader download -m SM-X300 -r EUX -v X300XXSCDZG1/X300OXMCDZG1/X300XXSCDZG1Samsung'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 X300XXSCDZG1.