Gatt said:this is also risky just let someone do it for you on craigslist or ebay i got mine jailbreaked at craigslist.
B e n said:Unfortunately, you do need an E3 flasher which depending where you're buying them from can be around $45-60 and I would not recommend doing the downgrade process yourself if you're not experienced with that type of work since it would easily break.
Although it has already been said in this thread; NextGenUpdate is one of the best modding forums / Playstation forum sites, if you need help with anything I'm sure the guys on there have your answer.