Jeti Not Starting up

Hi guys.

I have not used my Jet DS16 for many months so i had left it with the Batt disconnected. Today i decided to connect the Tx batt and power up, but when i slipped over the Tx to power up, i saw that the LCD had already come on.
And this is what the screen was showing.
What should i do to get the Tx to power up correctly again.
Have place the screenshot here.
any help to get the DS16 to work again would be great.

Connect the transmitter with a PC and try a reinstall with Jeti Studio the software. In te picture you can see the GUI is missing (version=FFFF)

Nico