[Frank_Jaeger]

I just tried to upgrade my Phat psp from the 3.52 M33-3 custom firmware straight to 4.01 M33 and when i hit the update icon under my memory stick it the program starts but now all i've got is a black screen with the words
"Unpacking... done."
"please wait..."

What did i do wrong? Have i bricked it? And if so, how can i unbrick it?

[sarailis]

you can't update from 3.71m33 straight to 4.01m33..you should update from 3.52m33->3.71m33->4.01m33......if its bricked you can unbrick it using pandora battery and mms