M366KKSU7DZJ5 – Galaxy Jump4 firmware
Build M366KKSU7DZJ5 is a feature update for the Galaxy Jump4 (SM-M366K)
on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 21, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 7, so downgrading to the previous build M366KKSS7CZH1 is still possible. Samsung still serves this file.
- Model
- SM-M366K
- Android
- Android 17
- Type
- Feature
- Bootloader bit
- 7
- First released
- Oct 21, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received M366KKSU7DZJ5, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
KTC | South Korea (KT) | Oct 21, 2026 | day 0 | M366KKSU7DZJ5/M366KKTC7DZJ5/M366KKSU7DZJ5 |
Download and release notes
samloader download -m SM-M366K -r KTC -v M366KKSU7DZJ5/M366KKTC7DZJ5/M366KKSU7DZJ5Samsung's release notes and security patch level for this update: SM-M366K / KTC on doc.samsungmobile.com. What each part of the build number means: decode M366KKSU7DZJ5.