First of all - I am an idiot.
I was on 3.41 OFW. I tried to inntall Geohot's 3.55 CFW through the XMB without updating to 3.55 OFW. After 100% I got a few bleeps and the console switched off. When I restarted I was still on 3.41.
When trying to install 3.55OFW, Evilnat 3.41 CFW or 3.55 OFW I was getting the Data corrupted 8002F2C5 error in both recovery mode and the XMB.
I was able to install Evilnat 3.55 CFW but I receive an 80029564 error when trying to install any packages (including newly signed 3.55, such as Snes9x). When trying to run previously installed packages I receive the error 80029519.
I still get the Data corrupted error when trying to install OFW 3.55. Geohot fails to install with the same bleep problem. I can install Evilnat 3.55 CFW again and again, but I have the same issues above.
Any help would be much appreciated, although I presume I'll just have to wait until a proper fix comes out.
I have managed to **** up my PS3 twice in one day