Even a full backup will not save everything, and it isn't advised to use a backup from a previous image, or other image.
You could use openwebif, which you have mentioned you can connect to, to export your bouquets, using the Bouquet Editor.
I have a feeling that you didn't set up your VU+ Solo 2, but bought it already set up, which would explain the problems, you're now experiencing, but I might be wrong.
Can you please tell us if you loaded Open Black Hole 0.1, and set up your receiver yourself, scanning in the channels, and adding plugins.
Has your receiver got an internal hard drive, for recording, and backup options?
You could use openwebif, which you have mentioned you can connect to, to export your bouquets, using the Bouquet Editor.
I have a feeling that you didn't set up your VU+ Solo 2, but bought it already set up, which would explain the problems, you're now experiencing, but I might be wrong.
Can you please tell us if you loaded Open Black Hole 0.1, and set up your receiver yourself, scanning in the channels, and adding plugins.
Has your receiver got an internal hard drive, for recording, and backup options?