3.10 OE back to 1.50?

is there any way to go back to 1.50 from 3.10 OE?
also, do you have to format the psp to upgrade?
im about to upgrade and im not so sure if this is a good idea.

Here's the recovery pack: http://rapidshare.com/files/417075/RECOVERY.zip
Just boot into recovery mode (hold R trigger on boot up) and do run program (I think that's what it's called.)

thanks ssaxdude
so if i run this from 3.10 oe-a it will downgrade to 1.50?

You will also need to put a 1.50 eboot in the recovery folder if it is not already included and rename the 1.50 eboot to UPDATE.PBP

so i should rename it UPDATE.PBP instead of EBOOT.PBP?

yes

where is the recovery folder?

thanks! back to good ol' 1.50!