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That command has something to do with firmware. That's all I know.
it is generally safe to use the fwupdmgr --force refresh command. This command simply instructs the fwupdmgr tool to check for any new firmware updates, even if it thinks it has already checked recently. The --force option tells the tool to refresh the firmware update metadata even if it believes it has already done so.
However, it is always a good practice to ensure that you have a stable power supply and a backup of your important data before performing any updates or refreshes, just to be safe. It is also a good idea to make sure that you are using the latest version of the fwupdmgr tool to ensure that any known issues have been addressed.
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I second the post made by @nfratom
The command is a safe command, but this does not mean that running it is the solution to your problem or applicable to your situation.
Reference:
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firmware updates usually add compatibility for new devices or fix the bugs related to a hardware and thus can fix hardware problems. but i won't recommend updating the firmware unless u are having an issue with ur computer hardware, since updating firmware is a risky process and if it gets interrupted u can end up with a dead computer
Dead computer?
computer will not even boot up if firmware updates fails
Boot up?
Start by pushing the power button ..... turning your computer on .....