I uninstalled Firefox on my LG g4 tried to reinstall a prior version off apkmirror. The install failed. I then tried to reinstall off the play store and the install fails Everytime with error 504. I've tried clearing cache removing battery tried clearing play store data and cache. I also tried visiting Mozilla ftp site https://ftp.mozilla.org/pub/mobile/releases/latest/android-api-11/ Can't access the site I get error code 404. Any suggestions would be greatly appreciated.