Hi there, I have HTC Desire from O2 and after 12 hours of online searching and tweaking I'm hoping someone may be able to help. I received the OTA upgrade yesterday which I accepted because I thought O2 might have it sorted by now. Obviously not. Anyway update ran with no interruption but then rebooted to a frozen O2 screen. I searched the net and eventually found the guide to update the phone using the RUU Rom. I followed this to the letter and the installer for the RUU wouldnt't open. I then realised that Google Chrome hadn't fully downloaded the file (113mb not 171mb). I then used a download manager to ensure I had the full file. It then ran and seemed to be working... until 80% in when I get ERROR 110 File Open.... please use a complete RUU. I downloaded it several more times in various ways but still same result. By this point my phone was pretty much bricked. I had black screen with silver HTC logo in the middle and 4 exclamation marks in the corners.... this remained whilst the phone was plugged in and the buttons in any combination did nothing. When i removed the USB cable i got a white boot screen with RUU highlighted in orange and again.... buttons do nothing. Every time I ran the RUU file it brought up a green bar as if it was making progress but then errors at the same point every time. I tried it on two computers, one win7 and the other vista. The vista machine doesn't even see the phone, it gives a USB error before the update begins. At 2am I used the SDK download and typed the following at command prompt.... "fastboot oem boot".... phone instantly boots into O2 Froyo and works fine. If i then unplug the phone, turn it off and on again.... i get the black HTC screen again, back to square one. At the moment I have fastbooted it so its working and have used the goldcard tool to obtain the CID and created the .img file. I don't know what to from here!!.... the update obviously hasn't FULLY worked but it must have completed enough for the thing to fastboot and seems to have full functionality (calls, wireless, network etc) I don't really want to void the warranty but O2's only option is to send it off for 14 days to have an engineer tell me its buggered and send a replacement. Any advice is appreciated. Rich.