Downgrade from 4.0.5 to 4.0.3

-Download the files you find h ere

-Unzip and get the file .lgu in USB flash drive (I recommend it, format it to FAT32 else is not recognized)

-Install it in medianav as any update.

The situation before the upgrade: it isclear that we are to 4.0.5

        Work in progress ... finished updating reboots itself

                                     Let's see how it went?

We went back to 4.0.3