Hi I'm new here and a bit of a noob on psp stuff so need some help please.

I've bricked my sons psp 1003 which was on 5.00 m3-33 I think while I was updating it to ofw 6.60 so I could use 660PRO-B9 on it, it is full bricked with no recovery menu.

I also have a psp slim 2003 running on 660PRO-B9 , so my question is how can I unbrick the 1003 with the 2003 without hard modding a battery and how can I make a magic memory stick with the psp slim I have.

A detailed guide would be most helpful on this as I dont want to mess both of my households psps lol.