Hi,
I don't like FW 3.15.0 and 3.16.0 because there are very big ghosting on my Glo

(the biggest appear with boxes when I use dictionnary for example)....
So :
1. can I reinstall 3.14.0 (or 3.13.0) directly on my device without to do a factory reset

?
2. will I keep my library and my shelves or not

if I don't do this factory reset ? I know Iwill have to reinstall the rest of settings or add-on like night mode...
3. should I save a file or a directory before thoose steps ?
NB : sorry for my bad english...