how to upgrade the NAV600 to a NAV900.

[raimon]

so you don't have bluetooth at all then or were you missing options before the upgrade was done is the module box actually there
did the 3d map option work for you ??
ok what i would do is to flash the USB only again and see if that does anything
but as i said this will not do anything to the config settings at all unless you installed it wrong  
but yes you can flash back to the 600 if you wish i will answer back tomorow
also was this with just the nav600/900 files or a theme file ??
use the link from here also

http://www.mediafire.com/download/djc5ub...0to900.zip

Thanks for your help.

Just the 600 to 900 I done, no extra files. not really bothered about the nav as I have a tom tom I bought just 3 months ago before I thought of buying a car (which has lifetime maps and 3D) I just wanted the bluetooth to work. 

But im looking at a parrot for that now and just getting this back to normal.

Doing the upgrade does not lose any menu settings. Not all vehicle settings show up until the engine is running. As for the upgrade process did you flash via USB then CD and then back to USB? This is the correct procedure 
As for your original question yes you can reflash back to 600.
I have the correct files to do this. I will provide the links when I find them.