You have any luck??Hi,
Did you get any further with this? I have a very similar issue with 256 bought from same retailer, to rule out the overheating theory I placed a laptop cooler below it to keep it cool as it does get warmer than the 254, the 254 runs perfectly on the same portal watching the same channel at the same time, I've done the 2x times firmware update and reset settings on the portal and BIOS as recommended and still no change. Was running fine up until today and keeps hanging after 15 mins or so.