18:47
denimesis
You must have a pandora battery in order to downgrade your PSP firmware.Reformat your memory stick.
Take out your PSP Memory Stick and pandora battery, then put back in your PSP Memory Stick first, and put your battery back in.
Turn your PSP power on, when you see three options; select the Downgrade option, your PSP will be downgraded in a very short time and it will be automatically shut down afterwards.
Turn your PSP on again, and you will see a blue screen. But no worries, you can just press the O key, and your PSP system is already version 1.5...
