Upgraded k750>W800, camera says wrong version

Hello just as topic title says, i have upgraded it to the W800 firmware but the camera dont work, says its version 0.9 and i should upgrade to atleast 4.5

I have downloaded v.10.03 is this version 10 or version 0.1?

Which is the best file to download and how do you install it?

Thanks

Install the version 5.3 which is available from anywhere. If you don't get it, I will upload it for you. For installing you may use xs++ or far manager.

Thanks,working ok

you can use v5.3 and v7.7
As i thnk v7.7 is the greatest.
you can us xs+ and Far manager to do this,

You have tested several and see which you prefer