Found fix for error 202 when unlocking phone
 

This may be old to some but I kept getting the error 202 message when trying to unlock my phone. I tried on 3 computers and still no lucky. So after a 6 pack later, I simply went to the activesync settings. file/connection settings/allow connections to one of the following. check that and make sure it says com1. Hope this helps and saves people time and search

Re: Found fix for error 202 when unlocking phone
 

interesting... ruu should have nothing to do with activesync after it enters bootloader, but anything is possible