LG Magna H500F

Hi, I own an LG Magna (H500F) and I managed to root it, but after uninstalling some bloatware it boots to a "Security error" screen. I have tried LG tools and every recovery post I could find without success. I can't find the original rom anywhere and the specific LG urls with my IMEI don't return the link to the KDZ file...

Anyone knows where to get this rom? (LGH500)

Thank You