I received my 3500 today,but it will not flash.I downloaded the files from Pansatusa.It will start downloading the bin and get around 20% then stop and the receiver display will flash.I have tried this 4 times already and get the flash update error each time.Iam not a newbie at this so what is going on with these receivers.I have seen many topics on the 3500 not loading today on many forums.