How do i downgrade my new psp 3006 6.10 version., il want to use my games in my old psp 3000. thumbsup

If you had custom firmware on your PSP, and upgraded to 6.37, there is currently no way to downgrade to the old CFW or to play any downloaded ISO files. You will need to wait until a new custom firmware is release or a down grade patch is available.

There's a way to downgrade it now. Datel released a new battery called the Light Blue Tool. Similar to the previous Datel Tool battery, it puts the psp 3000 into service mode where it can be downgraded.
If you have a Magic Memory Stick, then you should be able to downgrade just like you could with any other psp...

You can not downgrade PSP 3000 but can downgrade PSP 1000 and 2000.

Secondly write your question clearly.

Unfortunately, It's true. You can't get free games unless they're demos. I have searched for a way to get free games for a long time. It's not possible unless you are using a custom firmware, such as DarkAlex's custom firmware. That would require a Pandora battery and othe hacks. It may be possible to downgrade the firmware to and earlier version, but you would lose some of the new features Sony provides. You can find demo that are not on the PlayStation Network (PSN for short) on various websites. However, they are only demos.

high
the version of my psp is 5.55 ,how can i downgrade it to 5.30?i m not able to play iso games

PSP 2000 CAN BE DOWNGRADED BY PANDORA BATTERY BUT "NOT THE 3000"....AND PSP 2000 CANT BE 3000..............!!!!!!!!!!!111

if your firmware version is 5.03 or below it can be downgraded, if it,s above that it can not be downgraded as on now because the cracks available works only for version 5.03 or below. there are plenty of tutorials in the net if you want to downgrade your psp by yourself or you can bring it to a game shop which offer downgrade/upgrade or modification of psp.

You can't; not at this time, you will have to wait until a new FW is released.

downgrade psp 3000

yow... i have a psp3000 with a currently working hack... find in the internet a hack called chickHEN... i'm sorry but i don't remember where i found it.