Ok, so I wanted to root and install cm7 on my gs2. I rooted with no problem and installed Clockwork Recovery with ROM Manager. ROM Manager wouldn't download cm7 so I manually downloaded it and put it in the root of my sdcard. I made sure to check that it was for SGH-I777. I renamed it update.zip and went to install it through recovery, but it told me assert failed. I tried to reboot but it just showed an empty battery with a circle in the middle. I waited a few minutes and when nothing happened, I rebooted into download moad and reflashed the root kernel. On reboot, it showed the Galaxy S II text but just hung there. I used adb to reboot into recovery and tried to apply update.zip. Same error. Since I had backed up my apps with Titanium, I decided to just do the factory wipe and try again. Same error. So basically, I have a phone that only has a recovery mage and no OS, and it refuses to install cm7. Is there any hope for my situation?