Okay I have tried various versions of system and this is still showing on screen. I bought Xbox just before Christmas and it must have been in the development mode but I wasn't aware till now. I have tried latest version from Xbox site and I just get to 84 percent and it goes off as it fails to apply. I have tried wipeunf hard drive reformating and repartition with the software. So now I am down to the final thing I can try which is get the os version which it states on screen and hope that works.