After some experiments, I finaly found proper printing settings.

Mm, which video?
Yes I can talk to printer via terminal. Also I understand how EEPROM and ATMEGA works, I just can’t find out why Repiter-Host doesn’t allow me to write in it (I guess this is something like software\firmware incompatibility). Actually I found some topic in the reprap forum, with same printer vendor and same issue:
http://forums.reprap.org/read.php?406,492630
Need some time to study it, though.

Forgot to add the link sorry: https://www.youtube.com/watch?v=YUPfBJz3I6Y

i have the same issue as well, a solution is the make sure that the wall you are printing is infact divisible by your nozzle diameter. if it isnt then change the scaling slightly