Hey guys, as you can see total Noob here, so here's the story, I have a Samsung Vibrant , rooted with OCR , installed Rom Manager, Titanium Backup and Astro File Manager, i am currently trying to flash a custom ROM on my device (running Android2.2) BUT when i try to reboot into recovery with RM it always comes up with the default (Samsungs) recovery menu, and i get this error: E: failed whole-file signature
E: signature verification failed
If you can give me a simple step by step solution and maybe some reccs. of what ROM's to use and whats better for my phone it'll be greatly appreciated. Thanks.