It was firmware 2.50 and i loaded the 2.60 update then at 1% i removed the MS and turned in the MS with the 2.0 update. Then it said that it cant read the data and that i must call the support and help center. Then it shuts off and everytime when i turn it on there is only a black screen and after 1 minute it turns off. I cant turn it off myself, ThePSP turned off. my friend made it and has downgraded after he done that. I saw it. Then i tried witht my psp.