Steps:
1. Download radio-cm-9-LPW-galaxys2-signed.zip (here) and copy to internal sdcard.
2. Reboot to CWM Recovery.
3. Choose "install zip from sdcard".
4. Choose "choose zip from internal sdcard".
5. Choose "radio-cm-9-LPW-galaxys2-signed" and confirm.
6. Reboot.
I9100XXLPW
