Help with Pandora battery for PSP Slim

[Takeshi]

Well, I have a PSP Phat with CFW 4.01 M33-2 and I recently got a PSP slim that doesn't have a CFW. I want to downgrade it; so, I tried to make the pandora's battery using the same method that I used to downgrade my PSP Phat but it didn't work. I used this program to make my pandora for PSP Phat >>> http://dl.qj.net/index.php?pg=12&fid=14414&catid=193

As a result of my failing attempts, I got a couple of questions:
As far as I know in order to create a pandora's battery I need a PSP with any CFW that includes 4.01 M33-2, or do I have to use 1.50?
Can someone point me to a tutorial that explains how to make a pandora for Slim please? I don't have 2 Slim battery so I don't want to open the battery.

[rceckspurt13]

I think you can use a phat pandoras batery in a slim. Dont take my word for it though bucause I'm not entirely sure.

[Takeshi]

I think you can use a phat pandoras batery in a slim. Dont take my word for it though bucause I'm not entirely sure.

That's what I thought too, but when I place the phat pandora in the psp slim, the screen turns black and nothing happens.

[FreeK]

you can use a phat battery in the slim just not the other way around, and on the pandora battery page there is a ton of tuts on how to do this
i personally like the one from brin_vg best

[Takeshi]

you can use a phat battery in the slim just not the other way around, and on the pandora battery page there is a ton of tuts on how to do this
i personally like the one from brin_vg best

Cool man thanks for telling me, I followed that tutorial and I used a phat battery to downgrade a psp slim and it worked perfeclty. Awesome 

[Slim Hacker]

what you did was tried to use a 1.50 downgrader and the slim isnt able to use the 1.50 downgrader

[vladstir]

you can use a phat battery in the slim just not the other way around

You can use a pandora slim battery in a Phat, but the charger has to be used.