cant use usbafter downgrading 2.71 to 1.5

Please help I cant use the usb function (usb device not recognized) after I downgraded fom 2.01-2.71-1.5
to get back in to the memory card:(

Sounds like windows is having problems........................

I suggest you try updating to 2.00 and downgrading to 1.50 again

I suggest downgrading to 1.0 then updating to 1.5 :D

most ppl say go to 2.00 back to 1.50....never heard of a 1.0 downgrade suggestion :X hehe but then again what do i know :D

Used GTA to update to 2.0 but still no usb I'll try another lead tomorrow just weird and scary how it just happened after i downgraded.

Ya i have this problem as well, but i dont have a card reader and i cant upgrade or any thing, im basicly screwed. im not very happy at all.

Never happened to me. I use iR Shell to do all my PC to PSP transfers wirelessly anyways.. :P

yea, start using ftpd servers if you have wifi

This has never been a problem for me. Try formatting the MS and doing the 1.5>1.0>1.5 down/upgrade.

Also try changing the port it uses.

Windows is a bitch.

Try using Ubuntu, see if it works that way.