To note, despite being an Apple user with Safari on board I am a very long time user of the Firefox browser on my Apple devices. I have continued to support and donate to Mozilla in a way of saying thanks for the opportunity to use Firefox over the years. As noted earlier I have the most up-to-date versions of the Mac OS, iOS and Firefox on all of my devices including many MacBook Pros, and iPhones. I reiterate my previous note that my wife is not experiencing this issue, and the only difference in our two iPhones is that I am running Firefox 144.0 and she is currently running Firefox 143.2. I have warned her not to up-date until this issue is resolved. Having said that, I have gone through the suggested fixes via both Files App & XCode, and when I manage to get any where inspire of the crashing in seconds of opening the Firefox app. I actually got too the Settings section of the app but, once again, it crashed before I could go any farther. So I am back to you to remedy this situation. I will switch to Safari in the interim pending a successful resolution. Please advise if you have further steps to try. I would expect an app update in the Apple Apps store that would solve what appears to be an engineering issue. Thank you in advance for a solution to this problem. Mike