guys..just modded my K770i's sound driver to
Acoustic TNE v4.0 - Middle Sound & iBass. sound is much more louder & clearer compared to the original one. abit more bassy too. tested
Extreme Audio III too but the sound is like distorted at high volume, not impressed.
Dmitogor & TopSE v1.1 K-Series is at second place, just abit less bassy compared to TNE's. it's quite & sharp loud too.
anyway, here the guide on how to mod the drivers.
1. Install the USB Flash Drivers, you can get it
here.
2. Open XS++. Shut down your your phone.
3. Click '
Connect'. Connect your phone while pressing & hold the C button using the USB cable.
4. Information of K770i will be extracted. Click on
FSX then '
Start FSX'.
5. XS++ will then extract your phone's file system strcuture. wait till it's finished.
6. Open the directory as follows :
IFS->SETTINGS->ACOUSTICS7. Drag & drop all the 44 files into the mentioned directory.
8. Click '
Shutdown'. (
remember this step!)
9. Disconnect your phone.
would like to get some reviews from you guys about the quality of the new drivers. it's definitely better than the original ones, but how good are the modded ones?
happy trying!
P/S :
i will not be held responsible for anything happened to your phone during the drivers modding process. 
will try to mod the camera driver soon after this.

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