The most up to date PSP firmware is 6.60 and since you're on 6.20, the PS3 will complain. Fear not, you can fool it into thinking you're on 6.60 by changing your version.txt file. Do the following:
- Bring up the VSH menu on your PSP and switch the "USB device" option to Flash0
- Now connect your PSP to your Mac and navigate to the root:\vsh\etc folder on your PSP
- you'll see a file labelled as version.txt which you'll need to edit, make it look like this:
release:
6.60:
build:3062,0,3,1,0:builder@vsh-build6
system:50781@release_
660,0x05050010:
vsh
![Stick out tongue :p :p](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
6399@release_
660,v50953@release_
660,20090415:
target:1:WorldWide
Basically, there's 4 instances where your file will probably show 6.20/620 that needs to be switched to 6.60/660. I've bolded them above to show the locations
- Now save and close the file and disconnect your PSP
- IMPORTANT: be sure to open your VSH menu again and switch "USB device" back to memory stick
- Now connect to your PS3 and you should be able to transfer.