I bought one of these printers of ebay and it has been great but the motherboard has fried and i want use a ramps 1.4 board i have fitted and it is good to go only i cant get correct firmware to load.
can anyone point me to the correct firmware or anyone out ther done the same thing.
If you have a correct firmware and it is not installing correctly you may try a different version of Arduino, I had to roll back to 1.6.5 to be able to upload to my mks board! also make sure you have the correct board type selected. I read this as you have a good copy of firmware correct me if I am wrong please! Good Luck! 
tom666
3
CTC Prusa i3 Pro B printer is a copy of the Geeetech Prusa i3 Pro B and probably therefore should be compatible with firmware from Geeetech (Marlin 1.0.2 Stable).
For the RAMPS 1.4 board you need search the file PI3B-ramps.rar in this thread:
https://www.geeetech.com/forum/viewtopic.php?f=20&t=17046
or download it directly from this link:
https://www.geeetech.com/forum/download/file.php?id=1553
For the original GT2560 board is designed content from the file Marlin-PI3_Pro_B.zip:
https://www.geeetech.com/forum/download/file.php?id=2819
Functional versions of the Arduino IDE for uploading this firmware:
\* 1.6.0
\* 1.6.1
\* 1.6.2
\* 1.6.3
\* 1.6.4
\* 1.6.5 r5
\* 1.6.6
\* 1.6.7
\* 1.6.8
\* 1.6.9
thanks for your reply i have download the ramps version and i am up and running everything is working as should,
I am now going to start with my 2nd problem i bought the geeetech 3d touch so that i have the bed auto leveling.
tom666
5
