E066BXXS8CZI1 – Galaxy F06 5G firmware
Build E066BXXS8CZI1 is a security update for the Galaxy F06 5G (SM-E066B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 28, 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 E066BXXS7CZF2 is blocked. Samsung still serves this file.
- Model
- SM-E066B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 8
- First released
- Sep 28, 2026
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received E066BXXS8CZI1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Sep 28, 2026 | day 0 | E066BXXS8CZI1/E066BODM8CZI1/E066BXXS8CZI1 |
Download and release notes
samloader download -m SM-E066B -r INS -v E066BXXS8CZI1/E066BODM8CZI1/E066BXXS8CZI1Samsung's release notes and security patch level for this update: SM-E066B / INS on doc.samsungmobile.com. What each part of the build number means: decode E066BXXS8CZI1.