E556BXXU4CYJ4 – Galaxy F55 5G firmware
Build E556BXXU4CYJ4 is a feature update for the Galaxy F55 5G (SM-E556B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Oct 26, 2025 (method) and has reached
1 region so far. It keeps bootloader bit 4, so downgrading to the previous build E556BXXS4BYH2 is still possible. Samsung still serves this file.
- Model
- SM-E556B
- Android
- Android 16
- Type
- Feature
- Bootloader bit
- 4
- First released
- Oct 26, 2025
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received E556BXXU4CYJ4, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Oct 26, 2025 | day 0 | E556BXXU4CYJ4/E556BODM4CYJ4/E556BXXU4CYJ4 |
Download and release notes
samloader download -m SM-E556B -r INS -v E556BXXU4CYJ4/E556BODM4CYJ4/E556BXXU4CYJ4Samsung's release notes and security patch level for this update: SM-E556B / INS on doc.samsungmobile.com. What each part of the build number means: decode E556BXXU4CYJ4.