Samsung Galaxy J1 (SM-J120M) Firmware Overview
What is the latest SM-J120M firmware?
J120MUBU2ARD1, released April 5, 2018 for region ZTA with Android 5.1.1. It is a feature update on bootloader binary 2. The archive holds 2 official builds for this region.
Is the Samsung Galaxy J1 still getting updates?
Most likely not: there has been no new firmware since April 2018, so Android 5.1.1 is the last version this model got. The final builds below are still the best choice for a clean reinstall.
Can I downgrade the SM-J120M firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 2:
- Binary 2 — since Apr 2018
SM-J120M firmware for region ZTA
How to Flash SM-J120M Firmware
Put the Samsung Galaxy J1 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 2 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.