C5560ZCS5CZB4 – Galaxy C55 5G firmware
Build C5560ZCS5CZB4 is a security update for the Galaxy C55 5G (SM-C5560)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Mar 11, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 4 to 5: once installed, the device no longer accepts firmware with bit 4 or lower, so a downgrade to C5560ZCS4CYL1 is blocked. Samsung still serves this file.
- Model
- SM-C5560
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 5
- First released
- Mar 11, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received C5560ZCS5CZB4, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
CHC | China | Mar 11, 2026 | day 0 | C5560ZCS5CZB4/C5560CHC5CZB4/C5560ZCS5CZB1 |
Download and release notes
samloader download -m SM-C5560 -r CHC -v C5560ZCS5CZB4/C5560CHC5CZB4/C5560ZCS5CZB1Samsung's release notes and security patch level for this update: SM-C5560 / CHC on doc.samsungmobile.com. What each part of the build number means: decode C5560ZCS5CZB4.