im not sure if u can downgrade it back or not, i would need to check my ps3 firmware
i dont have the latest version as i have not upgraded in like 3 years
edit: i almost forgot about this link i saved a long time ago
http://www.mydigitallife.info/how-to...brew-packages/
those are steps to hack your ps3, sorry not sure if it works or not as i have never tried it