40 bucks is expensive for "modding". I'd do it for u for free, or you could do it yourself too. Its quite fool proof. Just don't freaking turn off the power as the firmware is flashing for chrissakes or you'll brick your psp.
Even bricked PSPs can be revived now, with the great discovery which is the Pandora Battery. Just borrow somebody's non-bricked PSP's battery, run the software and voila, PSP is unbricked. So flashing the PSP firmware now is 100% risk free.