I'm not an expert. But the major problem associated with convertions is software corruption. I didn't changed everything in my unit. The boot is still 5.8 the same that came with the unit. My maps are original Brazil NT 2012. The only part of the firmware changed was the one that controls the functions. The original functions are still available with some new adictions like the mp3 or route. Other functions like bluetooth and tv are based on the files in the text folder. If you keep that folder the gps will try to boot the bluetooth and the tv module and will try to control the gps warm time when it search for the sats. Because of that your unit will not work. A GPS unit is basically a computer with rom ram and a processor. The information can not be stored permanently in all the chips. Most of the information available in the memorys is erased everytime you turn off your gps unit. + If you wait time enough the batery will loose the charge and you will safely flash your unit. I know I can't flash a unit right before use. Its like turn of your computer when the windows is updating: the software could or cold not be corrupted. Its lucky based. Not a smart choice. But if you wait untill the batery discharge I assure you that the chances you brick your unit will be reduced drastically. It's not 100% safe but works.