M346BXXSCEZD8 – Galaxy M34 5G firmware
Build M346BXXSCEZD8 is a security update for the Galaxy M34 5G (SM-M346B)
on Android 16 (One UI 8). It first appeared on Samsung's servers on May 4, 2026 (method) and has reached
4 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to M346BXXSBEZB3 is blocked. Samsung still serves this file.
- Model
- SM-M346B
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 12
- First released
- May 4, 2026
- Regions
- 4
Rollout timeline by region
The date each region code (CSC) first received M346BXXSCEZD8, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|---|---|---|---|
INS | India | May 4, 2026 | day 0 | M346BXXSCEZD8/M346BODMCEZD8/M346BXXSCEZD8 |
CHO | Chile | May 11, 2026 | +7 days | M346BXXSCEZD8/M346BOWOCEZD8/M346BXXSCEZD8 |
COO | Colombia | May 11, 2026 | +7 days | M346BXXSCEZD8/M346BOWOCEZD8/M346BXXSCEZD8 |
ZTO | Brazil | May 11, 2026 | +7 days | M346BXXSCEZD8/M346BOWOCEZD8/M346BXXSCEZD8 |
Download and release notes
samloader download -m SM-M346B -r INS -v M346BXXSCEZD8/M346BODMCEZD8/M346BXXSCEZD8Samsung's release notes and security patch level for this update: SM-M346B / INS on doc.samsungmobile.com. What each part of the build number means: decode M346BXXSCEZD8.