How do you downgrade a custom firmware PSP to official firmware 1.5?

How do i downgrade my psp firmware from 3.40 custom firmware to 1.50 official firmware?

I currently have 3.40 wildc*rd firmware and i want to downgrade to 1.50. The reason is that i want the official firmware now
Answer:

to downgrade you want to use a pandoras battery to get back to 1.50 then there you have it a 1.50 psp . To do this you will need a second battery and a free memory stick

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Other answers

some games contain upgrades. if you put one in with 1.50 and click upgrade (under game) it should downgrade to v1.50. i dont know which games have 1.50 though

trueblue93

This video should help you!! http://www.youtube.com/watch?v=C2gG57x4fO0

lunalovegood0

you have to firstly upgrade to 3.50, then you can use the lumines game to downgrade to 1.50. Just do a search on google for 3.50 downgrader you should be able to find the files to downgrade. You will have to get a copy of lumines if you dont already have it, you should be able to get it off of ebay pretty cheap. This is the only way that i know of to downgrade...

ben_100_uk

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