Many people who run homebrew on the PSP have heard of the talented PSP dev named TheZ. TheZ is back with a new PSP homebrew called LockDown version 3.0. LockDown v 3.0 will let PSP users tightly lock down their PSP's with a custom password. So as long as you are running homebrew on your PSP then you can give LockDown 3.0 a try as it will keep unwanted visitors out of your PSP.
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