Hi all, First post on this forum and I'm asking for help, sorry guys, but thanks in advance for reading. Ok, got a Hero on Three in the UK (build 2.73.771.62 CL#80033) and pretty much every call (made and received) drops between 30 secs and 5 mins in. I always have reasonable signal and can get 3G and HDSPA (if thats how you spell it?!). I've tried turning the phone off, removing battery, removing sim, disabling wifi, gps and mobile data. Still no improvement. No problem with internet or messages. So I though I'd update the ROM to 2.73.771.73 from HTC. But I can't as continually get Error 170 (usb connection problem). So reinstalled HTC Sync, Drivers, restarted laptop and phone. No joy. Obviously I've tried to ring HTC but my call drops, same with three customer services (although seem to last a bit longer then). Anyone got any ideas? Tips? Tricks? Any help will be great as I love the Hero, but at the moment its just a fancy gadget not a phone.