Play 'Required Upgrade' Games on PSP 1.5...
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BETA 1 FAILED.
BETA 2 FAILED.
BETA 3 COMING IN 10 MINUTES
I've taken a quick break from the downgrader to develop an exploit to allow 1.5 users to play games that don't allow firmware tricks (GTA, Socom) and require 2.0, 2.01, and will allow you keep 1.5's low security!
More info soon!
ETA: Tonight?