Hi, I've been lurking on these forums for a while reading all the info and handy little tips you give

I have a problem now and I seek help if poss.. sony couldn't help me much tbh.
I have a PSP1000 (japanese psp) it's on firmware 1.52 everytime I try to upgrade I get nothing on screen but my background colour and an "X O" at the bottom.. pressing O doesnt do anything.. I cant see any writing or anything.. can anyone help me with this?
I've d/l the japanese v2.6 firmware and put it where it's sposed to be..
gratefull for any help