M135FXXSDEZB1 – Galaxy M13 firmware
Build M135FXXSDEZB1 is a security update for the Galaxy M13 (SM-M135F)
on Android 14 (One UI 6). It first appeared on Samsung's servers on Mar 8, 2026 (method) and has reached
4 regions so far. It keeps bootloader bit 13, so downgrading to the previous build M135FXXSDEZB2 is still possible. Samsung still serves this file.
- Model
- SM-M135F
- Android
- Android 14
- Type
- Security
- Bootloader bit
- 13
- First released
- Mar 8, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received M135FXXSDEZB1, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
EUX | Europe (Multi-CSC) | Mar 8, 2026 | day 0 | M135FXXSDEZB1/M135FOXMDEZB1/M135FXXSDEZA1 |
EUY | Europe (Multi-CSC) | Mar 8, 2026 | day 0 | M135FXXSDEZB1/M135FOXMDEZB1/M135FXXSDEZA1 |
SEK | Ukraine | Mar 8, 2026 | day 0 | M135FXXSDEZB1/M135FOXMDEZB1/M135FXXSDEZA1 |
BRI | Taiwan | Mar 11, 2026 | +3 days | M135FXXSDEZB1/M135FOXMDEZB1/M135FXXSDEZA1 |
Download and release notes
samloader download -m SM-M135F -r EUX -v M135FXXSDEZB1/M135FOXMDEZB1/M135FXXSDEZA1Samsung's release notes and security patch level for this update: SM-M135F / EUX on doc.samsungmobile.com. What each part of the build number means: decode M135FXXSDEZB1.