jubly Posted May 26, 2016 Report Share Posted May 26, 2016 Hi guys, I just got myself a F700BT. I want to upgrade the firmware. The head unit is at 2 at the moment. Can I go straight to 4 or do I have to go to 3 first? Many thanks Jubly Quote Link to post Share on other sites
guizmo Posted May 26, 2016 Report Share Posted May 26, 2016 http://avic411.com/index.php?/topic/22844-complete-30-install-guide/page-64 read here and just do that Quote Link to post Share on other sites
jubly Posted June 13, 2016 Author Report Share Posted June 13, 2016 Many thanks. Very much appreciated. Quote Link to post Share on other sites
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