Updating DX & DT firmware using End User Programmer (EUP)
Please visit the following page to download and install End User Programmer and USB drivers:
https://www.entel.co.uk/support/programming-software
Once installed run EUP and click on Upgrade Firmware and follow the instructions:
Once a radio (of the correct model) is connected its firmware will be updated. Once all radios firmware has been updated close EUP.