T636BXXS9DYJ1 – Galaxy Tab Active4 Pro firmware
Build T636BXXS9DYJ1 is a security update for the Galaxy Tab Active4 Pro (SM-T636B)
on Android 15 (One UI 7). It first appeared on Samsung's servers on Nov 26, 2025 (method) and has reached
21 regions so far. It keeps bootloader bit 9, so downgrading to the previous build T636BXXS9DYH2 is still possible. Samsung still serves this file.
- Model
- SM-T636B
- Android
- Android 15
- Type
- Security
- Bootloader bit
- 9
- First released
- Nov 26, 2025
- Regions
- 21
Rollout timeline by region
The date each region code (CSC) first received T636BXXS9DYJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CAU | Caucasus | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOXM9DYJ1/T636BXXS9DYJ1 |
EUX | Europe (Multi-CSC) | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOXM9DYJ1/T636BXXS9DYJ1 |
EUY | Europe (Multi-CSC) | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOXM9DYJ1/T636BXXS9DYJ1 |
SKZ | Kazakhstan | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOXM9DYJ1/T636BXXS9DYJ1 |
EGY | Egypt | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
ILO | Israel | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
KSA | Saudi Arabia | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
MID | Middle East | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
MWD | Morocco | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
XSG | United Arab Emirates | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOJM9DYJ1/T636BXXS9DYJ1 |
TEL | Australia (Telstra) | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
THL | Thailand | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
XME | Malaysia | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
XNZ | New Zealand | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
XSA | Australia | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
XSP | Singapore | Nov 26, 2025 | day 0 | T636BXXS9DYJ1/T636BOLM9DYJ1/T636BXXS9DYJ1 |
CHO | Chile | Dec 10, 2025 | +14 days | T636BXXS9DYJ1/T636BOWO9DYH2/T636BXXS9DYJ1 |
COO | Colombia | Dec 10, 2025 | +14 days | T636BXXS9DYJ1/T636BOWO9DYH2/T636BXXS9DYJ1 |
GTO | Guatemala | Dec 10, 2025 | +14 days | T636BXXS9DYJ1/T636BOWO9DYH2/T636BXXS9DYJ1 |
MXO | Mexico | Dec 10, 2025 | +14 days | T636BXXS9DYJ1/T636BOWO9DYH2/T636BXXS9DYJ1 |
PEO | Peru | Dec 10, 2025 | +14 days | T636BXXS9DYJ1/T636BOWO9DYH2/T636BXXS9DYJ1 |
Download and release notes
samloader download -m SM-T636B -r EUX -v T636BXXS9DYJ1/T636BOXM9DYJ1/T636BXXS9DYJ1Samsung's release notes and security patch level for this update: SM-T636B / EUX on doc.samsungmobile.com. What each part of the build number means: decode T636BXXS9DYJ1.