What works:

- everything

What doesn’t work:

- Offline charging (can't work good)
- Camera
- Youtube HQ
- Funny sim (can't be fixed)

Gapps:

http://goo.im/gapps/gapps-ics-20120429-signed.zip

Rom:
http://www.mediafire.com/?hi1o2phgs3l5fhf

Source device folder: https://github.com/lgics/cm_device_lge_p690

Screenshoots:



Thanks:
diogobuique for donate me money for buy the phone
lupohirp for source of cm9 for optimus one
adfad666 for help with cm9
Code Aurora Forum for kernel
Cyanogenmod team and Android for ICS and for kernel .35 for chic

Prerequisites:
Back up your contents of the sd card to PC
Root your phone
Install a recovery Clockworkmod
enter in recovery
Enable USB-MS toggle: Copy ROM.zip and GAPPS.zip
Disable USB-MS
Skip to the Installation section

Installation:
Enter recovery
Make a nandroid back up
Make full wipe (except wipe sd) for the first time installation
Flash from ZIP: Select ROM and reboot
Flash GAPPS and reboot

 Have fun!