What will happen if power is cut while my xbox is updating

You can try the steps here

https://support.xbox.com/en-US/help/hardware-network/console/system-update-solution

For those worried about power outages, you should purchase an uninterruptible power supply to help protect against them.

Hey there!

Nice to meet you! I'm Darhyl, an Independent Advisor. No worries, let me help you sort this out.

During an Xbox console software update, if there would be a power outage, there's a high risk that your console will lead to file corruption, game save loss, and even corrupted console OS.

I would highly recommend you avoid using your console if there are frequent power outages during the time.

Thank you for your kindness and understanding. I hope you have a great day!

I also wanted to ask like if I am using my xbox normally and there is a power cut, so what will happen, will anything happen to the xbox ?

If console OS gets corrupted, how do we fix it?

The pleasure is mine! Thank you for your response and that is a good question.

Power outages are a natural occurrence. No worries, it should be fine if it happens once or twice but it's not really something that should happen frequently with any devices such as consoles, pcs, smart TV etc. Xbox series console should always be shut down properly otherwise it could cause issues with the firmware.

Worst case scenario, you are in the middle of saving your game and there is a power outage, chances are your game-saved data will be corrupted and would result in a loss of your saved file.