Yeah I've tried that several times, didn't do any good when I did it. Based on what I can tell from my searches I've done over the weekend up to now, it's looking like something somewhere has messed with the Nand. Either a boot flag was written and unable to change it back. Or likely that install_otheros.pkg was ran without running setup_flash_otheros.pkg beforehand.
Don't currently have my PS3 with me, a local repair guy has it, sadly he doesn't really know much about the Nand and all that, so things are looking pretty grim here.