(adsbygoogle = window.adsbygoogle || []).push({}); So I have been lately thinking to downgrade my ps3 but Im not sure what firmware came with it originaly.
Id really appreciate if someone could tell me how

Sounds Like Your Trying to send your ps3 in for e3 flash or do it yourself. Heres The Link To Model Number list it will tell you everything but if its made over 3.55 i'm sorry.
Link- You must login or register to view this content.
All Superslims Don't work Some Slims don't work but most phats do.

Go to Settings / System Settings / System Information.
Then you see the FW you are on.

there is a .PUP file to install from XMB it show you your Factory Firmware ... But if your PS3 is + then CECH20xx (Ex CECH300x) isn't downgradable!

Settings>system settings>system information.

Go to my Firmware thread posted below and download the MinVerCheck PUP, you must be above FW2.60 but I'm already assuming that it is as you want to downgrade. After that, use the downgrading section of my thread to learn up on all possible solutions available to you.

You must login or register to view this content.