Geeetech

Hello!
I am begginer in 3d printing and also in ardunio!
For my i3 pro b acriylic printer I want to set 3d tought sensor-so I need to upgrade firmware-I downloaded already configured firmware from this forum and try to upload:at first my gt2560 rev a+ makes timeout errors and I can't upload firmware direct to my board-so I also don't have arduino programmer and I take arduino uno and use as bootloader! But this was't all-now my lcd2004 shows only black squeres! I try to adjust the screw at back side of display,but then black ones goes and there is only backlight!
Now I downloaded just firmware for my printer without 3d touch - but nothing changed!
Anyone can help me!
Before firmware update printer works fine and its new-I have been print maybe 10 hours!

Hi,as to timeout issue,you shoud use Arduino 1.0.1 to upgrade the firmware.You can check more detail in this post:http://www.geeetech.com/forum/viewtopic ... 20&t=17102.
After that,try to upload this firmware which has been modified and see if it works normally.

Nothing goes good!
Still all is bad