Answer:
Upgrades aren't difficult, and you can typically download a complete executable patch as a single file from the manufacturer's Web site. Once you've downloaded the update file, it's usually just a matter of extracting it (if it's a zipped file) and running the executable patch. Then you can just sit back and wait for the process to finish.
Always be sure that you're downloading the correct update file. The firmware for each particular model can be unique, so installing an update for the wrong model can completely disable your device (and possibly leave your system unbootable), so always confirm that any firmware update file is specifically intended for your device's make and model. If you're not sure, contact the manufacturer.
Also, read the manufacturer's specific instructions regarding the firmware upgrade before you start the process. Don't just assume that you download and execute the update file; some manufacturers may require you to extract their files first (maybe to a floppy diskette) or locate their updates in particular folders before execution. If the manufacturer's directions aren't clear, get someone to assist you.
Finally, never interrupt a firmware upgrade that's in progress. Accidental reboots or power loss can leave the firmware chip with incomplete reprogramming, thereby making it (and your device) virtually useless. Once the upgrade is complete, be sure to reboot your system and verify that it restarts properly. In addition, make sure all of your devices are still working as they should be.
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