Hi estemed Chryslerites I'm looking to update my MyGig head unit and am pretty concerned i'll wipe/corrupt the HDD. Here are my specs Application 1.220 Gracenotes 518 System 6818 006 3.5 (REW i think) I THINK that means i'm way down the update list (current one 2.404?) and that the grace notes are out of date. If anyone has got the time to answer these q's I'd be eternally grateful! 1) Can I just download the 2.404 ISO - burn it and insert it? Will I lose saved data in the flashing process? 2) I read somewhere that I need to update gracenotes version by version - is that correct? 3) Can this be done on a bootable usb? 4) Is all this worth doing? Looking forward to any help you guys can offer! Cheers J