I've send the ebook to Booxtor yesterday, he says can bring my firefly to life again
The only sad thing is how I miss it!!! But I have his little brother (the i62HD without moonligth) and I'll use my time reorganiziting my book's collection.
But, anyway, I don't know what it's necessary to do, for reparing my ebook. I didn't find any solution searching on the net.