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