Tanix TX5 Pro update

I am new to LibreElec and was given two Tania tx5 pro devices, but they have version 8 on them and I would like to update to the latest Leia version, but I have not been able to find the update files that actually work. Ive tried several of them, and luckily haven't bricked the devices, but they also haven't been able to update. In the config it says they are set to auto update, but they don't have any channels or anything, I have tried the fixes I found in the forums for that with no luck either, which is why Im looking for the update files I can just add to the update folder. If any one has any ideas I would appreciate it. Thanks.