I need major help w/ my psp

Alright, my psp was acting wierd since i installed and uninstalled harleyg's custom firmware.
Today i installed DarkAlex's custom firmware(271-b) and i installed a font, then a gameboot. After i installed the font, whenever i turned my psp on, it would go straight to recovery mode, then, i dont know what i was thinking, i formatted my memory stick. Now, it still goes straight to recovery mode (i cant exit, if i try, i go back to recover mode, i have to go to start some eboot then it'll take me to the XMB, then when i trie to go to GAME>MEMORY STICK, my psp freezes, i want to just install firmware 2.0, so i can downgrade and have a fresh 1.5

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