
Samsung Galaxy J1 J120MUBS2AQL1 is an Android 5.1.1 (Lollipop) firmware for 4 countries, 4 CSC codes. It is the same firmware configured per region and carrier (CSC). Find your country below, verify the file and download for free. Compared with the previous build J120MUBU2AQJ2 https://samfirm.shop/build/J120MUBU2AQJ2, Android and the bootloader binary are unchanged, so you can switch between the two in both directions. A newer build for SM-J120M is available: J120MUBU2ARE1 https://samfirm.shop/build/J120MUBU2ARE1.
Bootloader binary 2. Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.
Pick your region (CSC) to download the matching firmware package.
Specifications of SM-J120, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.