Geeetech

hey i have a Prusa I3 . I have changed my gt2560 card . When I did it went z Ax only upward, and y,z did not work at all.and now nothing works, display shows only a few boxes.
I have tried to update the firmware without success. Does anyone have any idea?

the lcd problem, check this link see if it helps:
http://www.geeetech.com/forum/viewtopic ... 13&t=17040
and refer to this link to install the firmware:
http://www.geeetech.com/forum/viewtopic ... 20&t=17181