Hi Guys,
I have come to this site as I have a printer extremely similar to your A3 (not purchased from you) that has elements that indicate this is a good place to start. The LCD after reset used to display:
A35_8_V1.4.5
A35
Repetier-0.91
Afinibot 3D Printer
The long story is that I have trashed the firmware and am having difficulty locating a configuration that is sufficiently compatible with my printer. Do you have a copy of the firmware for your A3 3d Printer available to me.
Your response in the affirmative would be very helpful.
Sincerely,
Theo