Navegando por pspupdates me he encontrado con esto
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We’ve gotten about 20 emails from users claiming that a new TIF overflow has been created for PSP firmware version 2.50. Basicaly, it claims to freeze up the PSP when run, just like the original overflow exploit for 2.00 did. A similar exploit was found in the 2.00 firmware, which was used to create the MPH 2.00 -> 1.50 downgrader.
We do not have a fv2.50 PSP here at QJ, and even if we did we’d be hesitant to try such a file without the creator stepping forward and giving us more information. We weren’t going to put this up, but we figgured there would be people out there that would want to hear about it. If it’s true, then great. If not, then oh well, no loss.
We warn you though, that EBOOT files that brick (break) your PSP *do* exist, and we strongly caution all but the most knowledgable users to download and test this file. We are only posting it so that we can get validation and pass a verdict one way or another on this file. As soon as we can pass judgement, I will update this post (or delete it if it’s bogus).
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Descarga:
http://files.pspupdates.qj.net/cgi-bin/cfiles.cgi?0,1,0,0,38,1764
El exploit del tif no lo kitaron con la 2.01???