Things You'll Need
Instructions
Turn off both the PS3 and the PSP and insert the mini-USB end of your PSP USB cable into the mini-USB port on your PSP. Insert the other end of the cable into a free USB port on your PS3.
Turn on your PS3 and PSP and go to the ̶0;Game̶1; menu on your PS3. From there, select the ̶0;Saved Data Utility (minis/PSP)̶1; option.
Scroll though the list of PSP game saves and press the triangle button to select the saved game you want to transfer to your PS3. Click on the ̶0;Copy̶1; option to transfer it to your PS3 account.
Disconnect your PSP from your PS3 when the copy process completes, then insert the game disc (for the game save you just transferred) into your PS3. Select the transferred game save when prompted to use the PSP save on your PS3 account.