If the device is a generic POS printer/scanner:
string on the back of your unit or under the "System Information" menu. Check Current Version: Note your current firmware build to ensure the is indeed an upgrade. 2. Where to Download the Official Software p50368v50 software download top
Flashing firmware carries a risk of permanently damaging your hardware. Proceed only if you are comfortable with the process or consult a professional technician. If the device is a generic POS printer/scanner: