Hi there,

You may try below to update your firefox:

1. On your device, tap the App Store icon 2. Tap the Updates button 3. Find the Firefox update 4. Tap the Update button 5. Firefox is now up to date

Hope this helps

Hi, the steps to update Firefox in IOS as follow:

1. In your iphone/ipad, tap to open App Store. 2. Tap the profile icon/your profile image at the upper right. 3. In the 'Available Updates' section, find the Firefox app in the list. 4. Tap on the Update button next to the app name. 5. Then, App Store will download and install the latest version of the Firefox app in your iphone/ipad. 6. When the Firefox app is updated to the latest version, the Firefox app will be listed in the 'Update Recently' section. You can start using the latest version of the Firefox app now!

Hope this can help you. Best Regards!