1. Fastboot Restore 6.16.211 (ICS 4.0.4 Official OTA Software). Put the phone into AP Fastboot mode and run the option. (Power the phone on with holding both volume buttons + power button.)
2. Ice Cream Sandwich Root 4.0.4. This root exploit by the awesome Dan Rosenberg roots our ICS 4.0.4. Have your phone plugged in with USB Debugging enabled and the USB Mode set to MTP or Camera. (If Devices still not found, please factory reset your phone for the root to work, this is of course if installing the drivers did not work).
3. Install Voodoo's OTA Rootkeeper App. With the phone booted and on USB Debugging enabled (not USB Mode Mass Storage as well), this will install the app.
4. Install Bootstrap Recovery App (ICS version). With the phone booted and on USB Debugging enabled (not USB Mode Mass Storage as well), this will install the app.
5. Install Safestrap Recovery App (ICS version). With the phone booted and on USB Debugging enabled (not USB Mode Mass Storage as well), this will install the app.
6. Flash 6.16.211 boot img (official kernel). Put the phone into AP Fastboot mode and run the option. (Power the phone on with holding both volume buttons + power button.) [This option is to undo Option 7]
7. Flash 6.16.214 boot.img (leaked kernel). Put the phone into AP Fastboot mode and run the option. (Power the phone on with holding both volume buttons + power button.)