M055FXXS5BYJ1 – Galaxy M05 firmware
Build M055FXXS5BYJ1 is a security update for the Galaxy M05 (SM-M055F)
on Android 15 (One UI 7). It first appeared on Samsung's servers on Oct 27, 2025 (method) and has reached
1 region so far. It keeps bootloader bit 5, so downgrading to the previous build M055FXXS5BYG9 is still possible. Samsung still serves this file.
- Model
- SM-M055F
- Android
- Android 15
- Type
- Security
- Bootloader bit
- 5
- First released
- Oct 27, 2025
- Regions
- 1
Rollout timeline by region
The date each region code (CSC) first received M055FXXS5BYJ1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | Oct 27, 2025 | day 0 | M055FXXS5BYJ1/M055FODM5BYJ1/M055FXXS5BYG8 |
Download and release notes
samloader download -m SM-M055F -r INS -v M055FXXS5BYJ1/M055FODM5BYJ1/M055FXXS5BYG8Samsung's release notes and security patch level for this update: SM-M055F / INS on doc.samsungmobile.com. What each part of the build number means: decode M055FXXS5BYJ1.