Change interface settings to/from serial and USB
Works on the Ingenico IPP320 and IPP350 payment terminal.
Once the iPP320/iPP350 loads the "splash" screen (shown above), quickly press 2-6-3-4-GREEN-F.
Use the "F2/F3" keys to scroll and select "TDA".
Press the GREEN enter key. Select "Configuration" and press GREEN, "Communication" and press GREEN, and "Select comm. type" and press GREEN.
Choose your desired interface.
To save, press GREEN. Press the RED key three times. When you see the save and reboot screen press the "1" (yes) key.
The iPP320/iPP350 will then reboot with your saved settings.