[Can't get firmware to upgrade after install of UM2 extrusion kit]

Thank you Smithy,

Very prompt and helpful ideas. I had success today when I spoke with Tony Harris at fbrc8 support. He diagnosed a loose connection of a flat cable from the front display. I opened it back up and voila, one of the cables had come loose. Got that seated and the um2 works well now. A big relief. Thanks again. John

[Can't get firmware to upgrade after install of UM2 extrusion kit]

I have a seven year old Ultimaker 2. I just installed the UM2 extrusion upgrade. All went well. Only thing off was that original UM2 did not have ferric core around the motor wires. Tried to use Cura to upgrade the firmware and there was not 'Ultimaker 2' choice. Tried the UM2 Connect version and unit does not turn on normally. Front display stays black. Don't know what to try next. Any suggestions appreciated.