Exclamation I got a problem in rebooting into recovery mode on my LG Prada 3

Hi there, I rooted my device at the first place. Then installed CWM and a ROM manager to install Cyanogenmod 10.2 Unofficial after. But the thing is I cannot access the recovery menu on my phone. I tried all kinds of VOL(+/-) + Camera + Power keys combinations but all I got were the S/W Upgrade display page and Hard Reset. I even installed some optional apks to boot manually right inside the stock OS itself (which is ICS Android 4.0.4 V20H Official) but the buttons of the very app didn't respond. More clearly, when I press the reboot app's buttons (don't get me wrong, they were both visible and selectable) nothing would happen. What should I do to solve it? Thanks.