2.71 SE-B Downgrade

[Beenie Man]

I have heard of this new firmware created by Dark_Alex called 2.71 Custom Firmware SE-B which allows you to enjoy the splenders of both 1.5 and 2.71 features. I think I might buy a new non TA-082 PSP and upgrade to 2.71 SE-B to enjoy 2.71 as well as 1.50 homebrew. However, I feel a little strange as it is hacking the Flash0 inside the PSP, messing with its flash. I am just asking if it is possible to downgrade from 2.71 SE-B to 1.50 safely. Is it possible to downgrade from 2.71 SE-B to 1.50 with any 2.71 downdater or downgrader like Dark_Alex's generic downgrader?

[Raitei]

You cannot install the custom firmware on TA-082
But if you were to install it, downgrading wouldn't need the downdater. Hold R as you're booting to go into the CFW menu, where you can set up certain things and also remove the firmware

Im sure there is a way of getting firmware on TA-082. If anything there are still places to get an original PSP