You can only get cfw without a Pandora if your psp is firmware 5.03 or lower and you use the program chickHen to do so.
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NO NOT IF YOU HAVE A NEWER PSP 2000 OR 3000 AND GO but older psp 2000 and all 1000 can downgrade with Pandora battery then hack it and then download 6.35 cfw and install
You simply buy a Pandora kit, because you on't need the Pandora battery more than once, when you update to CFW. After that uyou can use your PSP 110 battery ;).
definitely no the best u can downgrade without a Pandora battery is 3.03.... what you can do is use the Pandora battery to downgrade and the results will be great I've done it on my psp and when i downgraded my psp i got to download as many games that can fit into my psp(full games of course) so downgrade your psp using a Pandora battery:)
You can't, even with the battery.
http://www.psp-vault.com/imagesguidesfirmware_changeability_chart_v371.png It is most likely not possible. Sometimes you will have to cut the Pandora battery but i have more guides. Tell me your enquireys at khenu@hotmail.co.UK