Meh. If our target is 1.50 (or 1.0), we miss the most important part that actually makes the difference between versions (small bug fixes are irrelevant imo) So trying to replace "1.50" string with any version higher than the current, won't give any results since 1.50 lacks digital Sony signature. It's probably easier to downgrade 2.00 to 1.52 or 1.51 but they don't allow homebrew so there's no reason to try to achieve that.
BTW I dropped my PSP (in plexiglass case) on a hard concrate floor. About 2-3ft (70-90cm) traveling distance. That caused the PSP to shut down. + Some Cherry Coke spilled on top of it. Didn't have time to see what happened so I just wiped it really quick and left it. Few hours later I tried to start it and it looked like "first time start" My damn background is not the blue (with the waves) but damn PURPLE!!! Videos, pictures and other run with no color change. Couldn't find if I can change background in options. Please help!

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