S9310ZCSECZJ1 – Galaxy S25 firmware
Build S9310ZCSECZJ1 is a security update for the Galaxy S25 (SM-S9310)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Nov 1, 2026 (method) and has reached
1 region so far. It keeps bootloader bit 14, so downgrading to the previous build S9310ZHSEDZJ1 is still possible. Samsung still serves this file.
- Model
- SM-S9310
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 14
- First released
- Nov 1, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received S9310ZCSECZJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CHC | China | Nov 1, 2026 | day 0 | S9310ZCSECZJ1/S9310CHCECZJ1/S9310ZCSECZJ1 |
Download and release notes
samloader download -m SM-S9310 -r CHC -v S9310ZCSECZJ1/S9310CHCECZJ1/S9310ZCSECZJ1Samsung's release notes and security patch level for this update: SM-S9310 / CHC on doc.samsungmobile.com. What each part of the build number means: decode S9310ZCSECZJ1.