plaese help my psp phat wont downgrade!

my psp is a phat psp model 1001 and the pandora battery is model 110 3.6v 1800mah and i have two one gigabyte mem cards both pro duo and magic gate and converted into rains pandora magic memory sticks ive read a lot of tutorials and forums still no help my psp when i try to downgrade just has power green led on and the screen does not come on and the mem stick light led does not blink at all or come on and it doesnt shut off automatic until out of battery power this is really frustrating ive been trying to mod for months please help

 

Did you try holding the left shoulder button to boot into service mode?

Try this :

1 Insert the MMS

2 Hold down the left shoulder button

3 Then insert the Pandora battery.

If it still doesn't work, try remaking the MMS using PSP Pandora Deluxe.

 

still same prob just keeps bricking itself

 

Try pressing the screen brightness button when it's black.

If that doesn't work then the problem is with the MMS.

 

ill try that and i found out that my motherboard is a ta-082 is there any help?

 

also when i insert pandora batt it just boots the system normally and when i insert it again sometimes when i press certain buttons it bricks the system any info? please thank you so much