Crashing frequently

The Devolo ADSL Fun LAN is nice and compact and is stable ...
Or rather, it was stable until my provider my DSL bandwidth of 4 Mbit / s on 6MBit / s has raised. Since then, the modem hangs like on and must be removed and turned times. During normal surfing on the other hand it is annoying when operating a lounge server properly angry. According to advertising the modem is the way up to 8Mbit / s cope.
The manufacturer is aware of the problem, only a firmware update can now wait for itself in two months. And the product is still sold well! All this I would not have believed Devolo.
From a purchase I have to advise unfortunately, as long as the problem is not resolved. Otherwise there would have been 5 stars.