If the device is stuck at the Jazz logo, a simple hard reset via recovery might work; otherwise, a full flash is necessary.
Many professionals use tools like CM2SPD2 or the Avengers Box for a more stable flashing experience. Step-by-Step Flashing Overview jazz digit 4g lite flash file spd
Follow these steps carefully. Incorrect flashing can permanently damage the device. If the device is stuck at the Jazz
Install the SPD USB Drivers and launch the SPD Upgrade Tool . jazz digit 4g lite flash file spd