Stuck on connect controller.

I've been searching the whole internet but couldn't find the exact answer or anything close enough to help me out.
I'm in possesion of a e3 flasher and used it last week.
Everything went fine (after a long time) but i have done everything like the foolproof guide on this site.
Everything went fine untill the finishing downgrade in factory mode.
I have tried to get in fsm using my psp 2000 and i knew there was a possibility this doesn't work.
I installed the right firmware on it 5.50 gen-d and gen-dIII .
This didn't work so i bought a p3free.
The only hex files i could find where for fw 3.41 but i found somewhere on the internet that is doesn't matter to get in fsm as long as i had the right file to get out of fsm.
But with the p3free i have tried a lot of hex files but there is no way that my ps3 goes into factory mode so there is no way i can downgrade.
My ps3 stays at the screen to connect the controller with a usb cable.
When i connect the controller then my ps3 says my firmware is broken or something.
Is there someone who knows what my best option is.
I came from software version 4.31.
Thanks in advance.
Grtz maus