Hi guys.... first of all i want you to know that my english is not the best....!
I saw a new method that they are useing to play games without the system check for updates inside the umd!
They just swap the umd on the black screen!
What about using the swap method with the updates that come inside the umds to try a downgrader?
Example... (if you have a 1.5x psp)
-put on an umd that need to update to 2.0...
-when it says that you need to update click ok
-swap the umd with another one that need to update to 1.5 (like coded arms)
-try to downgrade
This is just a thought, dont flame...