Samsung Galaxy A33 5G (SM-A336M) Firmware Overview
What is the latest SM-A336M firmware?
A336MUBUKGZI3, released September 15, 2026 for region ZTO with Android 16. It is a feature update on bootloader binary 20. The archive holds 3 official builds for this region.
Is the Samsung Galaxy A33 5G still getting updates?
Yes. The newest build is from September 2026.
Can I downgrade the SM-A336M firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 16 to 20:
- Binary 20 — since Sep 2026
- Binary 19 — since Jul 2026
- Binary 16 — since Jan 2026
A phone already on binary 20 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 20 build. How to read a build number.
SM-A336M firmware for region ZTO
How to Flash SM-A336M Firmware
Put the Samsung Galaxy A33 5G into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 20 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.