Sorry, man. Can't help ya. DevHook is for a PSP with version 1.5 firmware, it can emulate a 2.7, not be put on one. Also, no, we couldn't give you our firmware dumps, as, I believe, it's illegal. A quick search can help ya out, but sorry, man. Try the 2.71 > 1.5 downgrader, then go up to 2.00, then back to 1.5.
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