What's your PSP's model?
Originally Posted by Xellos
If it's a slimline, you might want to try the 6.37 ME CFW.
Otherwise, you should just upgrade to 5.50 GEN-D3 final and then install the Prometheus-3 patch on it.
If you are bold enough, try the Prometheus-4 patch.
But that patch breaks some games on my PSP-1006 console.
SCPH-10000 S. MINOKAMO v1.01 (Defunct)
SCPH-10000 S. KISARAZU v1.00 (faulty)
SCPH-15000 S. KOHDA (With warranty seal!) :D
DESR-5100 S. EMCS