M366BXXU8CZJ5 – Galaxy M36 5G firmware
Build M366BXXU8CZJ5 is a feature update for the Galaxy M36 5G (SM-M366B)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 28, 2026 (method) and has reached
2 regions so far. It keeps bootloader bit 8, so downgrading to the previous build M366BXXS8BZH3 is still possible. Samsung still serves this file.
- Model
- SM-M366B
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 8
- First released
- Oct 28, 2026
- Regions
- 2
Rollout timeline by region
The date each region code (CSC) first received M366BXXU8CZJ5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Oct 28, 2026 | day 0 | M366BXXU8CZJ5/M366BODM8CZJ5/M366BXXU8CZJ5 |
NPB | Nepal | Oct 28, 2026 | day 0 | M366BXXU8CZJ5/M366BODM8CZJ5/M366BXXU8CZJ5 |
Download and release notes
samloader download -m SM-M366B -r INS -v M366BXXU8CZJ5/M366BODM8CZJ5/M366BXXU8CZJ5Samsung's release notes and security patch level for this update: SM-M366B / INS on doc.samsungmobile.com. What each part of the build number means: decode M366BXXU8CZJ5.