screen with issues after software update

Hi there,

As soon I touch the screen anywhere upper. it hit only the lower part.

I did a software update since this it stays like that.

Could not start the calibration at all.

Software 7.8

I bought a second 255W with the software 6.0 to get a backup.

But somehow it won`t work via gamin express to install older software.

thanks Tobias