Default [Q] GT-P1000 + CM9 cannot get USB diag mode

HI All,

I have a GT-P1000 that I need to get into USB diag mode on, from what I have read the standard *# menus do not work on AOSP ROMs, how can I get into diagnostics mode on this phone?

I have read that I can enable it through /sys/devices/virtual/usb_composite/diag, however I don't have a diag folder under usb_composite, is there another method for this tab? I have read that other versions of CM might be able to support usb diag mode, can anyone confirm this?

I know going back to stock might be an option, however I can't seem to find a stock rom for this tab. If anyone has a stock rom, I'd appreciate it (GT-P1000, Hong Kong version, GSM).

Thanks, Ivan