Software ok buttom mot working

Hello jain48,

If you're looking to update your iPhone software, you learn how to do that here: Update your iPhone or iPad - Apple Support

These steps may help:

Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.

2. Plug your device into power and connect to the internet with Wi-Fi.

3. Go to Settings > General, then tap Software Update.

4. If you see more than one software update option available, choose the one that you want to install.

5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do.

If you need help with something else, please let us know.

Thanks.