Hacking Need help updating dashboard with J-Runner

[Mazamin]

I'm a noob in xbox 360 hacking. I have got a xbox 360 corona 250 gb and I need to update the dashboard version to 17502 but I don't know if the ram is winbond 2k or not. Can you help me? (Furthermore I don't know if the chip is cr4)

 

[DinohScene]

Come on lad, I expected better of you :c
Anyway, take a look here, it's all you need.