My unit now is like a brick.
The cost to send to US is not effective.
A new unit, like Dragonfly 4 PRO, with WIFI and others new features is about U$ 285.00 + shipping
The service cost is U$ 240.00 + shipping X 2 (brazil to US and US to Brazil)
Simple: is much more cost than new and best unit.
I will give up it.
Thanks to all, but not to Humminbird. I will never more buy nothing made by HB.