
Samsung Galaxy J3 Top J337AUCSCBUB1 is an Android 9 firmware for United States (ATT). 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 J337AUCSBBTI1: bootloader binary raised from B (11) to C (12), so after installing it there is no way back to older builds. A newer build for SM-J337A is available: J337AUCSDBUI1.
Bootloader binary C (12). Flashing firmware with a lower binary is usually blocked by Samsung anti-rollback.
Pick your region (CSC) to download the matching firmware package.