How do I update the BIOS on my HP EliteBook?
Update BIOS by navigating to www.hp.com, clicking Support & Drivers > Drivers & Software. In the Enter a product name/number box, type your computer model info and click Search. Click model link, select OS, then follow prompts under Step 2: Select a Download for the most recent BIOS.
From the official HP Elitebook 850 G3 Notebook PC manual, page 84
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