EDIT: I also found the below thread with information.
https://www.mobileread.com/forums/sho...light=reb+1100
----------------------------------------------------------
I just saw your post. I don't have your device but I did a search and found the below thread..
https://www.mobileread.com/forums/sho...light=reb+1100
Maybe this has information you could use? If not message back and we can try to find someone who has experience with this.