I did it. Actually the seller gave me the file a while ago by mistake. I wanted some 3d-models of a part, but he sent me the marlin config for the DP5. I did some editing ( the guide from the link above did help me a lot) and i've found the parts that are cousing it to set X9 Y-25.
These were set by some offsets in the config file. I also had to edit the autoleveling positions so they match with the new offsets.
1. Download the Arduino IDE and install it
2. Tools => port => select the com port (in my case COM5)
3. Tools > Board > Boards Manager... > Arduino AVR Boards(click on it) > select 1.6.11 from the "Select version" menu > Install
4. Download the modified from my google drive:
drive.google.com/open?id=0B0Dlnf-VJJ4GV19Od2ZwVzBUaTA 5. Open marlin-mod/marlin/marlin.ino
6. Connect the printer with the usb, but leave the power button at 0.
7. Upload the new confiuration
using the upload button:
Now i dont have to use S3d to set my zero and i'll cincidet moveing the printer to the other room, so Ï can se it overnight.
Hope, the it will be helpful for someone