Trouble unbricking fat PSP

One of my fat PSPs will not boot to the magic memory stick I created. It will only turn itself on with the pandora battery and the memory stick light doesn't turn on. I was successfully able to boot to the memory stick in another fat PSP and a slim PSP. I made the memory stick with Rains UltraLite MMS maker for PSP version 5.0. Could there be something else wrong with my memory stick or the PSP itself? Also made a 1.5 magic memory stick with an earlier version of the software. It booted in the same PSP and didn't boot in any others.

When I try to put my 1.5 magic memory stick in, the green light just stays on and nothing on screen. When I put my 5.0 memory stick in, it stays on for a few seconds and shuts off.

Any help is greatly appreciated.