1. Make sure you have your phone rooted. Normal and easy way is via CF root (Check xda forum for CF series).
2. Backup!
3. Place the VR files into your sd on your phone.
4. Off phone
5. Volume up, home button and power all at same time - this will go into CWM recovery mode
6. If you have back up, choose back up.
7. Once done, select - clear data, clear cache and go to advance, select clear dalvik
8. Now, select Install update from Zip or something like that.
9. Scroll to the VR zip and select it.
10. Wait for boot up. Will take awhile.
11. If it stuck at loading / bootloop, off phone, and wipe and reflash back via CWM.

There you go.

Good battery life:
Ninpo and SpeedMod. SpeedFrey, haven try yet.

Is anyone else here rather underwhelmed by the audio performance on the SGS2? Having come from the iPhone, the audio quality on this phone is significantly worse. The only workarounds seem to be using PowerAmp, which is a paid app. Can't get that, at least not yet. Anyone got any other tips for better audio quality?

GH-X, I tried playing FLAC songs on stock un-amped. The quality is bad. Significant difference even if I play songs un-amped on my PC. The only way is to get a headphone amp. They don't come in cheap though. Especially good ones. The Fiio E11 is one of the more budget oriented ones. What earphones are you using?

Its roughly 2/3 the size of the SGS2. And it comes with a rubber band thats meant for taping the amp together with any mobile devices.

You can't improve what isn't there. At this stage amplifing a poor signal will just give you a louder poor signal :-P