BUGkc wrote:I solved my problem using JTAG procedure. With JTAG I got blue upgrade screen and then I installed new firmware (winceimg).

Hi, i have same problem, can help me to how repair my device?

In my previous post there are links how to repair it.

To everyone having problems with their Mio C720 device. I have NO idea if this will work but right now you kinda have a brick so why not try. A C720 uses MioMap 3.3 as its operating system. If you can get into the internal disk via USB try putting this download on it after deleting everything else.

http://www.navitotal.com/showthread.php?3290-My-3.3-internal-Flash-drive-with-the-Mio-unlock-already-contained

EDIT: I seriously doubt that the above will work. The above procedure [post #15] seems quite involved - I downloaded it. Unless you can devote a lot of time, it maybe a lot easier just to buy a new device. They're pretty cheap right now unless you go deluxe.

Procedure: [Please Register or Login to download file]