OK to kind of answer my own question, found the manuals for the XMB which gives hints on how file uploads, downloads and transfers may work. It seems uploading is restricted to files in the "Photo" folder. So would they be trying to specifically prevent PS3 game save uploads?:
http://manuals.playstation.net/document/en/ps3/current/browser/upload.html
But it says downloaded data would go to some destination which may be "preassigned."
PS3 game data can only be stored in "Saved Data Utility" folder:
http://manuals.playstation.net/document/en/ps3/current/game/3savedata.html
Question is can you upload and download the game saves in "Saved Data Utility" either directly in the XMB browser or by moving it to the Photo folder?
It also refers a lot to "Storage Media" meaning SD memory cards and such?
If the XMB interface doesn't let you freely move or copy files back and forth between the various predefined folders or directories (such as the Photo and "Saved Data Utility"), you may have still be able to move files indirectly through memory cards.
There could be different reasons for not allowing files to be freely moved. Could be not all file formats are supported in all the folders. Could be some DRM restrictions. You wouldn't think photos or game save files would be subject to DRM but remember that PS2 Memory Cards use Magic Gate.
http://manuals.playstation.net/document/en/ps3/current/browser/upload.html
But it says downloaded data would go to some destination which may be "preassigned."
PS3 game data can only be stored in "Saved Data Utility" folder:
http://manuals.playstation.net/document/en/ps3/current/game/3savedata.html
Question is can you upload and download the game saves in "Saved Data Utility" either directly in the XMB browser or by moving it to the Photo folder?
It also refers a lot to "Storage Media" meaning SD memory cards and such?
If the XMB interface doesn't let you freely move or copy files back and forth between the various predefined folders or directories (such as the Photo and "Saved Data Utility"), you may have still be able to move files indirectly through memory cards.
There could be different reasons for not allowing files to be freely moved. Could be not all file formats are supported in all the folders. Could be some DRM restrictions. You wouldn't think photos or game save files would be subject to DRM but remember that PS2 Memory Cards use Magic Gate.