A5660ZCSECZI2 – Galaxy A56 5G firmware
Build A5660ZCSECZI2 is a security update for the Galaxy A56 5G (SM-A5660)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 17, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 13 to 14: once installed, the device no longer accepts firmware with bit 13 or lower, so a downgrade to A5660ZHSDCZHB is blocked. Samsung still serves this file.
- Model
- SM-A5660
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 14
- First released
- Sep 17, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A5660ZCSECZI2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CHC | China | Sep 17, 2026 | day 0 | A5660ZCSECZI2/A5660CHCECZI2/A5660ZCSECZI2 |
Download and release notes
samloader download -m SM-A5660 -r CHC -v A5660ZCSECZI2/A5660CHCECZI2/A5660ZCSECZI2Samsung's release notes and security patch level for this update: SM-A5660 / CHC on doc.samsungmobile.com. What each part of the build number means: decode A5660ZCSECZI2.