Error upgrading to CFW using Pandora extended boot menu

[hooliganbandit]

I thought my psp was bricked for good, but using the extended boot menu, I am now able to boot from my memstick. Now I am trying to have the extended boot menu install 3.52 m33, but i get an error. The program preps the psp for the upgrade successfully. Then, when i run the actual upgrader, it does its thing with PSAR (I have no idea what that is but..) and then says
"error: unassigning flash0" and goes back to the boot menu? Any advice? Thanks.

[Cloudhunter]

I'd try going to 1.50 using it first.

Cloudy

[hooliganbandit]

I'd try going to 1.50 using it first.

Cloudy

I'm not quite sure what you mean. I replaced the 3.52 m33 eboot w/ a standard 1.5 eboot, but since the 1.5 eboot doesn't have a menu or anything the psp just crashed and started over.

Anyone know what i can do from the usb options?