if you have a usb cable you can go on the playstation site once you find the update you want there will be full instructions and you can just follow there steps and it should i did it this morning . i hope i helped
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To update a chipped PSP, a person must use the system update function manually. From there, the chipped PSP must be upgraded to version 6.60.
Because it updates the PSP not the network.
You can't update a psp without a working battery. It'll state that the battery is low and you need to charge it.
you need to update it like by putting new games that have higher update versions and your psp will be updated and you will get cool stuff like the tasty treat theme.
Log onto www.playstationport.com and search for "updating my psp". You will find it. :)