I started off this hobby with just the Whistler PRO-73 and have made the jump to the great Valentine 1 in under a year. I bought an older pre-POP unit on ebay and am hoping to send it to V1 for a firmware upgrade. The seller says that the current version is 3.789. My question is: would I be able to get the V1 CS to flash my 3.789 to a 3.813 on request followed by a tune-up? Has anyone had any experience with demanding a specific software version and actually having them comply?