Hacking Jailbreaking my ps3? (ver. 4.21).

[Aruu]

Hello everyone,
I have no idea about jailbreaking, and i want to know if it will be possible to jailbreak my ps3 slim version 4.21
I bought it 2 years ago, i found some guides but dont know what to do really...
I need some help, i will provide more information about my ps3 if needed, just tell me what do you need to know... will be glad if you also point me to the right guide...

Thanks!

 

[Qtis]

What was your original firmware when you bought the PS3? Was it on 3.55 or below? If not, then you will have a hard time getting CFW on it.

 

[Aruu]

What was your original firmware when you bought the PS3? Was it on 3.55 or below? If not, then you will have a hard time getting CFW on it.

Jee... i dont remember But im 100% sure it was 3.xx, is there a way to find out the original version?

 

[osm70]

Jee... i dont remember But im 100% sure it was 3.xx, is there a way to find out the original version?

http://gbatemp.net/threads/how-to-check-minimum-firmware-version.318773/

 

[Aruu]

Ok i did it and this is what i got:

"Data version of 2.70 or latter can be installed on this system"

Is that a good thing? i guess i can jailbreak it?

 

[Cyan]

it means you can downgrade it up to 2.70
but what you want is to downgrade it to 3.55 to be able to install cfw.

To downgrade, you need to buy a hardware flasher, open your console and install it on your chipset. you cannot downgrade with a software.
If you are not ready to open your console, buy a chipset flasher, or do it yourself, you'll have to find someone to do it for you.