Hey again, So my friend left me her PSP in which she hasn't used for the past... 7 years? It was a pretty long time and when I opened up her PSP, I saw that the system was still 3.80 M33-5. Mine was 5.50 GEN D3 but upgraded it to 6.60 with a CFW a few moments ago. She wants to upgrade it to 6.60 but I already know how to do that. What I want to know is how to upgrade 3.80 M33-5 to 5.50 GEN D3 (I know the procedure on how to upgrade it to 6.60 from there). Thanks.