http://www.navitotal.com/forums/showthread.php?3698-go510
updated my mates device in this thread
it worked great i tested it and so did he no problems
today he tried to add ozzy osbourne voice(paid for dont know why) and he said it just froze
now the device has green light with charge plugged in boot will not start up
solved a similar problem on a one v2 by charging for 2 hrs then holding power down for 10 secs then pushing ...