2009 error code when updating my iPhone 12 pro max

Hey there Pete1913,

Thanks for reaching out to Apple Support Communities. We understand you’re receiving an error when updating your iPhone. We’ll be happy help. 

For error 2009 check your USB connection, USB cable, USB port, or computer. 

“Here's what to check. Try again after each step:

1. Use the USB cable that came with your device. If you don't have it, try a different Apple USB cable. 
2. Switch to a different USB port on your computer. Don't plug into your keyboard.
3. Switch to a USB port on a different computer.
4. If you still see the error, check for other USB issues, check your third-party security software, then check your hardware.

If you still see an error, contact Apple Support.”

You can read more about this here:

iOS update and restore errors

Take care.