want to downgrade fw3.52 without a disk drive

I have a old fat psp and the disk drive is broke (so cant do the lumines way), its on fw 3.52 and now i want to place a custom firmware on it so i can make use of it again...

Do i have to make a Pandora battery by making a modification to my my original battery by opening it up and modifying it?

And also do i need to change my memory stick to a magic stick? if so how and where can i do this?

Then I should be able to install a cfw?

you probably get a million questions like this I really have tried looking just dont want to do something and end up with a brick.

Thanks for any help!

Try the search feature, look for pandora..

Pandora is safe and unbricks PSP's, so you lose there :P

right, try the pandora battery, it's said that it can downgrade any version psp easily, i have a list of site which sell pandora battery, just as a recommendation.

1)pandora battery—downgrade any version psp

2)pandora battery for sony psp

3)eBay.co.uk - battery pandora, pandora, psp, psp battery items at low prices

4)Amazon.co.uk: pandoras battery