1) sometimes when i use the round knob the change songs it takes me back to map.
2) VERRY laggy at times.
3) Now the power shuts off and wont come on and i gotta wait 10 days for it to be fixed...

 

could be a bad ground. sometimes when i used the knob on my old pioneer, it would restart, and sometimes it wouldnt come back on unless i turned the car of and started it up again. if its a new hu, theres a really good chance theres a lose wire somewhere, likely ground or power.

 

I second MetalHead's suggestion, it DOES sound like a bad grounding screw, conntection, etc something loosened up. Either that or you got one of the fated "problem units" some people complain about. I have a f90bt and love it, its laggy at times but with the hardware physical hack, I can use my GPS on the go which to me is invaluable.

 

Yeah my old Alpine would do that if the detachable face was not seated properly.

 

maybe yours is defective? mine has worked perfect

 

this is also very likely.

 

The word is that there was something wrong with the OS.

 

Well I'm about to buy one from

PIONEER AVIC-F90BT - CompUPlus Direct

It's $674 shipped. I hope mine won't be defective