How can I check for firmware updates?

Swipe on the control panel, select Setup > Service menu > LaserJet Update, and then click Check for Updates Now to ensure your printer’s firmware is up-to-date (Page 9).

From the official HP Color Laserjet Pro Mfp 4301 4303dw Fdn Fdw Printer manual, page 10

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Answers from the official manual.

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