If the progress bar doesn't move for more than 10 minutes, the flash may have failed. Do not turn off the power until you’ve exhausted all options, as this is the moment of highest risk.
Once the utility finishes, it will usually prompt you to restart. If it doesn't, manual restart is required. Upon rebooting, the system might take a little longer than usual to post—don't panic, it’s just initializing the new firmware. Troubleshooting Common Issues
Some versions of the zip file come "pre-packaged" with the firmware. If the tool opens and shows a blank "File" path: Click or Browse .