At last, after trying alot of reaver versions and OS's with built in Reaver I found this 0.4.6.1 version of Xiaopan which is handling my USB card. I managed to begin cracking my connection, i will see how it will end up. It is going like about 12 sec/pin which I guess is too long. But it is not my actual question or problem. I want to ask - the progress which is showed in perecentage, is going around 0.03 each 12 seconds. I want to understand the logic of this process: I will see my WPS cracked only when it reaches 100% or if the correct pin will be input at 34.45% for example, it will stop and finish or the 100% point should be reached anyway? How is it working?