I have to say thanks for this.
I have an european AVIC F710BT and I ... Brik'd It ... then saved it thanks to the usb testmode.
What I did:
Following the guide for the 900 posted here:http://avic411.com/forum/viewtopic.php?f=34&t=30637&p=207335&hilit=spr_Compass#p207335 , I tried the hack for quick delete route, and did a few other modifications for I expected them to skip the Safety Warning message.
But, I either did a mistake at some step, either the mod is not compatible with AVIC F710BT with my firmware 3.020200.
Then it was quite a mess:
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