Hacking can I downgrade a 6.39 psp 4003 to 6.2

[Nyap]

So i've been hearing some good things about 6.2, how can I downgrade?

 

[Nyap]

oh sorry, it's 3004 :/

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also, why does my psp ask me for the date and time every time i turn it on?

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ok so basically I'm confused - I decided to install "Davee's Infinity CFW"
but I'm not sure if I already haz cfw or not
here's the sd card:

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turns out I have "pro-cfw" or something like that
but I need to open an app
how can I get cfw when I boot

 

[hyprskllz]

When you download the pro cfw, there should be a fast recovery app.
Copy the folder to PSP\GAME and launch it from the game menu.
After you're back to XMB, check system settings>about (or something like that, it's second from the bottom). If it's saying 6.39 Pro-XX, you are on cfw.
Then you can proceed to install infinity.
About your date and time problem, i assume it is a battery problem. You can try borrowing a battery from your friend then check if it persists.

 

[Nyap]

When you download the pro cfw, there should be a fast recovery app.
Copy the folder to PSP\GAME and launch it from the game menu.
After you're back to XMB, check system settings>about (or something like that, it's second from the bottom). If it's saying 6.39 Pro-XX, you are on cfw.
Then you can proceed to install infinity.
About your date and time problem, i assume it is a battery problem. You can try borrowing a battery from your friend then check if it persists.

yup somebody guided me through installing infinity with LME CFW, and the time and date problem is gone aswell

 

[hyprskllz]

yup somebody guided me through installing infinity with LME CFW, and the time and date problem is gone aswell

So the time and date is because of faulty install?
Anyway, it's good to hear you have solve the problem.
Cheers