HP Prime Firmware Update Problem

[Maestro]

I have the same problem. I tried all the resets listed here and elsewhere and no fix. I just bought this calculator yesterday. Connected to connectivity kit today, and an error message said it cannot transfer files until the firmware is updated. Backed up and updated, but no touch screen now.

Restore will not work either. The touch screen functionality is not restored, nor is the data that was so important to me placed back on the device (spreadsheets are restored as Function Apps?).

What should I do?

Edit: The buttons all work fine, and my matrices are still intact. The touch screen is not responsive, the Apps are jumbled (as stated above), and I cannot transfer files to the hp envy.