my Walkera devo 10 is really dead?

Good morning everyone
I write because I have a trouble with my devo 10
After USB firmware update my tx is dead...
I have read many topics about but I have not clear the solutions to trouble!!!
I will change the original module with a 4 in 1 and control chip nextly ...but first I hope someone can help me to understand
If is possible solve the problem in another way?
Really tanks to everyone for help!!!

The first thing to do is unplug the battery and leave it unplugged for a few minutes - at least 10 minutes, but some have said leave it overnight.

In the meantime, we need a few more details...is this a new Devo 10? Are there any mods on it? Which Deviation build are you loading? Are you doing the load from a PC or a Mac? Did the initial load (holding EXT while powering up, which gets you the upgrade screen) work as expected? After that did you power up with the ENT button to get the USB drive?

I have buyed my tx 1 years ago
I have tried to unmount the original module...nothing
Tried to unplug battery for many days .....nothing
There aren't no mods...
I have tried to upgrade firmware in win 8.1
I don't know what was firmware version...sure wasn't the last...
Do you have had the same problem?
Do you can help me to understand better were and what verify to solve the trouble?
....really thanks