How to get back to cfw framework ps3 slim

Ok guys i had truble on my ps3 slim framework

I have ps3 slim “framework CFW” and ps3 super slim “ framework ??? My brother instal it, what i know just it need to open han before you can open multiman

I bough it refurbish online bla bla

My problem is i re instal my ps3 slim and acidently use flask that my brother used for instal the super slim han…

The problem is how to make my slim ps3 framework back to cfw ?

I try reinstal again use any cfw framework like cobra etc but it always said the file is corrupt

But it went well if i reinstal use ps3up for super slim

Is there anyone know how to get back my cfw framework??