Samsung Galaxy J1 (SM-J100MU) Firmware Overview
What is the latest SM-J100MU firmware?
J100MUUBU0AQC1, released April 21, 2017 for region BAT with Android 4.4.4. It is a feature update on bootloader binary 0. 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 2017, so Android 4.4.4 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-J100MU firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. All decodable builds in the archive share binary 0:
- Binary 0 — since Mar 2017
SM-J100MU firmware for region BAT
How to Flash SM-J100MU 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 0 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.