SONY's 3.8 firmware

Dear every one this is my first letter here, I’ve updated my PSP”1003” to official sony firmware v3.8 and I’ve lost the ability to run homebrew .note that I triad to update to 390m33; but I didn’t succeed.
Could any one help me solve this problem please.
Regards.
Yasser Algailany

Edit: does any one have an answer?

I'm no expert but, you probably will have to use a pandora battery to install custom firmware since there is no other way to install it on 3.8.

[crait]

I'm no expert but, you probably will have to use a pandora battery to install custom firmware since there is no other way to install it on 3.8.

This is correct.

and here is a tut on how to do it http://www.pspbrew.com/forum/viewtopic.php?t=11076

i've bout 1GB magic gate memory stick pro duo. I'll try to build pandora battery as the link sudgest, note that my psp is 1003, is that a phat?
thanks.

Yeah, 1003 is a phat.

thank you.