I've had a V1 for a few weeks now, got it used on ebay. Its the 1.8 POP2 version although I haven't checked the firmware.
I was on my way to work this AM and it was near freezing, I had let the V1 stay in the car overnight (hidden of course.) I was over at the GFs house so was much closer to work than usual. Anyway I cross by a radar speed sign on a daily basis it uses K band. Today as I was prepared to mute my V1 I went by the sign and NOTHING, not a peep! The sign was displaying speed correctly etc. The sad thing was it detected the X band from the security/door at the grocery store seconds later.
After the day warmed up I drove by again at lunch time, detected just fine.
Anyone else experience the cold weather symptoms? I seem to remember reading about the heat having this effect but not the cold? I also thought they put some circuitry to correct for the temp differential in the V1.8s?