(adsbygoogle = window.adsbygoogle || []).push({}); When I turn my PS3 on, I get an error message saying "The system software cannot be run correctly." It was working perfectly fine yesterday.
You must login or register to view this content.

Then it tells me to install a firmware 3.40 or higher, so I tried installing 3.55 downgrader, but that failed, then Kmeaw 3.55, and that failed also.

I don't know what to do, can someone help me please.

Have you tried installing 3.55 OFW via recovery mode? Try 3.55 OFW then going to CFW. Also make sure to verify the MD5 so you don't end up installing a corrupted update.

What happens when your press the PS button?
I had experience with this aswell, turns out Filezilla corrupted files.
If it doesn't go away when rebooting, try going into Recovery Mode and re-install your firmware.