A556SKSS8DZF2 – Galaxy Quantum5 firmware
Build A556SKSS8DZF2 is a security update for the Galaxy Quantum5 (SM-A556S)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 16, 2026 (method) and has reached
1 region so far. It raises the bootloader bit from 7 to 8: once installed, the device no longer accepts firmware with bit 7 or lower, so a downgrade to A556SKSU7DZE5 is blocked. Samsung still serves this file.
- Model
- SM-A556S
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 8
- First released
- Jun 16, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received A556SKSS8DZF2, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
SKC | South Korea (SKT) | Jun 16, 2026 | day 0 | A556SKSS8DZF2/A556SSKC8DZF2/A556SKSS8DZF1 |
Download and release notes
samloader download -m SM-A556S -r SKC -v A556SKSS8DZF2/A556SSKC8DZF2/A556SKSS8DZF1Samsung's release notes and security patch level for this update: SM-A556S / SKC on doc.samsungmobile.com. What each part of the build number means: decode A556SKSS8DZF2.