have a look for a e3 flasher on the internet order it and DIY like i did mine there are a load of great tutorials out there showing you how to and what to do.
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i used this tut and it worked wonders, so have a look for the e3 flasher its cheaper if u know what your doing and will allow you to do more than one Ps3 and if there isn't already a service where you are you could cash in once you learn the ways