hello i bought avic f900bt. i have firmware: 2.009 and maps: 01.00008, teleatlas 2007. i have 2 questions:

1. how to update maps with new teleatlas maps

2. i have a problem with usb playing. usb disk is recognized, but when i shutdown device and power it on, it doesn't see usb disk and i must to unplug it and plug it again :/

 

is my firmware ok or should I update it, when yes - how?

thank you very much