Dark_AleX has released a universal unbricker that can be for both the PSP Fat and the PSP Slim & Lite.

The official firmware eboots 1.50, 3.40, and 3.71 are required. Beside unbricking, you can install 3.71 M33, dump the PSP’s NAND to nand-dump.bin, or restore NAND from nand-dump.bin. The last option is dangerous and should only be if it’s your last chance to get your PSP working. If you use a dump that isn’t your own, you will get either a brick or a corrupt idstorage.

Make sure you read through all of directions very carefully in the readme before starting. Enjoy!

Download: Universal Unbricker v2

[Source: Dark_AleX]