HowTo: Upgrade your PSP to 6.20 OFW
Here are the instructions on how to upgrade your PSP to 6.20 OFW so you can install any of the following Hen to run Homebrew or ISO backups of PSP games: 6.20 TN-E (recommended) 6.20 Pro-B7
Here are the instructions on how to upgrade your PSP to 6.20 OFW so you can install any of the following Hen to run Homebrew or ISO backups of PSP games: 6.20 TN-E (recommended) 6.20 Pro-B7