WAB Version changer and upgrades

[ForteGSX]

I was reading various posts in different threads that stated that if you use the WAB changer you cannot run an update because it will brick you PSP. Now, I am wondering if this is true or not. Can somebody please help me with this because I would like to test out V 2.0 and the downgrader.

[Bus1nessboy]

Get The version changer back on your PSP and use it again to put your PSP back @ Version 1.50 then exit and update as you would normally. P.S. 2.0's web browser kicks ass, I just wish we could run EBOOTS on them then I'd be very happy and don't forget about the beautiful wallpaper option but I downgraded so who cares.

[ForteGSX]

Have you tried this method? I want concrete evidence about this.