Got a 6131 with FOTA support.
Going into Settings -> Telephone setting ->Telephone upgrade
I can see the current version of my frimware (yey! no more *#0000#) and a greyed out option to "install phone upgrade".
The only missing option is "download upgrade"!
My face went from to when I saw this.
So maybe someone (who knows, and doesn't guess) can tell how, when, where, why and by whom is the option activated?
How do I configure from where is the software is downloaded?
Since I have no idea about this, maybe someone could write a little essay about FOTA, and related topics.