I updated my Nokia Lumia 800 to WP 7.8 (7.10(8858) to be precise) a couple of weeks ago, and the low volume of media playback is really starting to irritate me, to the extent that I even now carry a second phone to serve as an MP3 player. Before installing this update, the media volume of my Nokia was comparable with that other device.
On this basis, I want to revert to 7.5 as I would rather be able to hear music, instead of resizing start screen icons. I have already tried to reset the phone via Settings > About. This removed all of my personal data (joy) but did not revert to 7.5. I have also tried resetting using hardware key combinations as described here but this just does the same thing.
Does anyone know of a way to restore to actual factory settings?
I don't have a backup of 7.5.