I installed TM, correctly I assume since i can but up in FW 1.5. But when I try to boot into 3.40 oe (by holding triangle while bootong) nothing happens. The psp wont boot up. the green light will eventually turn off. psp phat with 3.80M33-5 btw. Also when installing 1.50 it said "done press x to exit" or something similiar. But when installing 3.40 it gets to the end and just says "ok" the the psp shuts off
-= Double Post =-
Update. I decided instead of using the files i downloaded from DA's site I'd try using my UPMS instead. Worked perfectly, I can now boot into both 1.50 and 3.40. Don't know why the other way wouldn't work though.