Xbox - Offline System Update failing at step 3 - 42% (over all 76%)

Please try power cycling the console by holding the power button on it for 10 seconds till it shuts down. Then unplug it for 30 seconds. Then hold the Sync button (left side near the USB port on the original Xbox One and just below the power button
on the S and X consoles) and the Eject button for the console then press the power button and hold until you hear a second start up noise.

If you are using the Xbox One All Digital console then you only need to hold the Sync button and then press the power button to reset.

You should now see a new screen. Scroll over to Restart/Reset and reset the console to factory settings. There is an option to keep installed games and apps so you won't need to redownload them and your saves will be safe on the Cloud

Hi samsoft17

Please use the troubleshooter page linked below:

https://support.xbox.com/xbox-one/console/system-updates-solution

Hi,

My Xbox One S was unable to startup, so I tried to perform Offline System Update using USB drive.

But during offline update using USB, step 1 and step 2 went successful. But during step 3 (42%), it goes into continuous loop of restarting and updating from (34% - 42%) and restarts and try again. This is in continuous loop.

Please help what to do now.

Thanks,

Sameer Gupta

Your error flags as the following: The system update that was installed is failing validation during the system check.

To resolve this issue, you will need to install the Offline System Update Diagnostic Tool.

If you continue to receive this error, or if you’d like help understanding the steps to install the Offline System Update Diagnostic Tool, please contact Xbox Support.

Please try the steps listed here:
support.xbox.com/.../troubleshoot-system-updates

If those fail, Support should be able to get you a replacement unit.

For this error follow step 3 of the of line system update tool.

support.xbox.com/.../offline-system-update-diagnostic-tool