Samsung Galaxy A36 5G (SM-A366B) Firmware Overview
What is the latest SM-A366B firmware?
A366BXXUCDZIF, released September 29, 2026 for region MM1 with Android 17. It is a feature update on bootloader binary 12. The archive holds 3 official builds for this region.
Is the Samsung Galaxy A36 5G still getting updates?
Yes. The newest build is from September 2026.
Which Android versions did it get?
The SM-A366B builds in the archive run Android 16 to 17. The earliest build we have for each version:
- Android 17: A366BXXUCDZIF (Sep 2026), 1 build in total
- Android 16: A366BXXS7BZA1 (Jan 2026), 2 builds in total
Can I downgrade the SM-A366B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 7 to 12:
- Binary 12 — since Aug 2026
- Binary 7 — since Jan 2026
A phone already on binary 12 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 12 build. How to read a build number.
SM-A366B firmware for region MM1
How to Flash SM-A366B Firmware
Put the Samsung Galaxy A36 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 12 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.