For the B310E CM2, you will often get a single .tar or .md5 file, or a ZIP containing .bin files.
No. Rooting grants admin privileges. Flashing completely replaces the OS. Rooting is uncommon on B310E feature phones. samsung b310e cm2 flash file
The designation refers to a specific PCB (Printed Circuit Board) revision . Flashing the wrong revision (e.g., CM1) can result in dead device, white screen, or keypad malfunction. For the B310E CM2, you will often get a single