I just got my USB2-Plus unit along with a bluetooth extention and aux/usb charging cable from carputer-shop.co.uk. I installed it in my car last night but still have the dash out to play around with it some more.
I have it plugged into my cd changer port at the back of the radio using the nis02 cable and wired to constant. Playing from usb works fine and will be my main use for the unit, i'll need to sort the folders on the usb a bit better as it's a pain to try and skip down the list when you have a few artists/albums in folders using one virtual disc. I'd rather keep the first disc for random music in one directory and use the remaining five discs for artists.
Random works well and pressing skip continues to play randomly while still allowing you to press back and go back to the previous song. It will only play one virtual disc randomly whether it's set to all cd random or cd random.
I couldn't get folder/track names to work and pressing display did nothing so i tried to update the firmware to the lastest "Nissan / Infiniti 03-10 (with text)" but it wouldn't work at all after that so i had to load up the "Nissan / Infiniti 99-07 (CD, No text)" which got it going again. So i take it the cd changer grom unit on the g35 has no text? In my case mine is the 2005 model stereo. I tried to play with the config file http://www.gromaudio.com/support/usb-config.html, but no luck.
Bluetooth works well and drops the music to play a ringtone immediately. Music resumes as soon as you hang up. Streaming from your phone will work straight away and drop whatever is currently playing, no need to change modes.
I set usb android streaming to work with any app using the config setting "a= 0" from here http://www.indashpc.org/vbullettin/viewtopic.php?p=5929, so now i don't need to use their AALinQ app. It won't support steering controls or track titles after the change but it will allow you to play youtube etc through the stereo.
Still have some tweaking to do and if anyone has insight on track titles that would be great. Also, cycling the repeat button a few times triggers my google now voice calling through bluetooth yet the mic doesn't pick up my voice. Anyone lese experience this?