Mendel90+Panelolu2

Repost from general:
I have a used Mendel90+Panelolu2 and I am trying to upload a new config h ( to adjust my Z zero height) to the Melzi board.
I am using Arduino 1-0-1, which verify`s and transmits my update. Reporting it as successful.
I then use pronterface to load M502 followed by M500.
Then home all axis and the zero has not changed.
Being a newbie I am completely flumoxed.
Please if you can think of anything that may be amiss, it would retrieve my sanity!
Thanks in advance

p.s Arduino reports after successfully loading file:- avrdude: stk500_getsync(): not in sync: resp=0x00

I think you need to verify your connection and settings for your board.

From what I can see the error you are getting is a generic Arduino error message that can be caused by several things... perhaps this will get you started? [arduino.stackexchange.com]