Geeetech

Hi
i did not have right guidance to upload the firmware to my Rostock 301.
I initially tried to upload without running flash program and without putting the jumper.
now when I tried in the correct way
it says "jump app fail"
all the time
i have tried several times
does that mean my mother board is ...

i have travel several times it doesn`t work.

could bot upload firmware to Rostock 301
message appear as "jump app fail"
at the end of the upload
now lcd screen does not work and the nob does not work

This is the message i had at the end of upload.
LCD display stopped working.
try to upload the firmware again doesn`t work.

HI could anybody please help me to upgrade the firmware version on my Rostock 301
I did everything as explained above.
at last i got a message saying "jump app fail!"

and my lcd screen got stuck.
The Nob/push button doesn`t work.
restarted but still same.

how do I reset? the mother board

thx for ...