M135FXXSDEZB2 – Galaxy M13 firmware

Build M135FXXSDEZB2 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 8 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to M135FXXSCEYK1 is blocked. Samsung still serves this file.

Model

SM-M135F

Android

Android 14

Type

Security

Bootloader bit

13

First released

Mar 8, 2026

Regions

8

Rollout timeline by region

The date each region code (CSC) first received M135FXXSDEZB2, counted from the first release.

Download and release notes

samloader download -m SM-M135F -r EGY -v M135FXXSDEZB2/M135FOJMDEZB2/M135FXXSDEZA1

Samsung's release notes and security patch level for this update: SM-M135F / EGY on doc.samsungmobile.com. What each part of the build number means: decode M135FXXSDEZB2.