I updated my AT&T focus using seveneighter. I received an error at some point and had to clear some space from my computer because there wasn't enough room to backup. After that, it went through the 4 or 5 updates it needed and got me to 7.8.
2 things since I've updated:
- I might be imagining things, but it feels like the battery dies slightly faster.
- The upgrade allows visual voicemail, but it doesn't work. It's annoying because you have to go to the "voicemail" screen in the phone app and the phone attempts to download visual voicemail for about 20-30 seconds before it fails and you can just call your voicemail.