ok so anyway... a couple days ago i updated to 2.5(FROM 1.5!!) like a complete idiot to play mega man maverick hunter X...
i have the 1 year warranty from best buy so i decided i was going to brick it tonight by removing the battery while updating to 2.6
while i was updating i was about to remove the battery when i thought "i wonder what would happen if i removed the memory stick" so i did and the whole update stopped and the psps displayed this:
"the memory stick could not be read. If you cancel, you may not be able to start the PSP System.
Check that the memory stick is correctly inserted and press the X button"
so i reinserted it and pressed X to see what would happen
what happened was the whole update restarted from 0%.
my point to all this is.. could this be used as a downgrade method by somehow tricking the PSP that a 1.5 is a 2.01, 2.50, 2.60, etc, etc?
i would have attached some screenshots but the quality that i took the pictures in was too high, if you want to me post them anyway let me know and i'll lessen the quality to make them viewable on here.