Okay, me and my friend were playing with the psp flash0 and discovered some things

* the ps3 has remote write acces to the psp flash0
* the ps3 alias is inside the file system.dreg @ 0x9180 on flash1
* the psp mac address is inside the file system.dreg @ 0x9160 on flash1
* there is also something with ip 172.29.71.1
* the psp writes his info (mac etc.) to the ps3's flash1

So my first theory if  we are lucky, we can MAYBE dump the ps3 flash1