cksoft Posted November 9, 2014 Report Share Posted November 9, 2014 Hi all, I upgraded my F10Bt to Z140 (F40bt thanks to avic411 users) it's ok but i don't like the new design, so i would like to know if it's possible to downgrade it with the original firmware ? because the original UI was more logical, so, i didn't saved the old one... Does anybody here have the original firmware ? and how to downgrade ? thanks Quote Link to post Share on other sites
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