Hi, I'm not sure of the details, but a good place to start is at https://www.mozilla.org/en-US/firefox/ios/testflight/

Thanks, Mr. Elias. But the worms are escaping the can & I'm not sure I want to re-can.Here's 2 worms, #1: can 2 versions of FF (here, stable & dev build) exist on same ipad? (we're assuming there's only 1 OS on ipad, I don't know how to set up a dual boot on iPad & am not going there). #2: what happens to the bookmarks if FF is removed? I'm assuming there is nothing on ipad like a "user profile folder" where bookmarks are untouched, like on a full computer. And, I don't particularly want to set up synch betw platforms, or even move bookmarks to icloud or ifiles & back, I'd just lv things as is than do that. Thank you.