The keyword "upd" in your search likely refers to the HP Universal Printer Driver or, more likely in this context, a specific firmware or driver update package. However, installing this driver on Windows 10 is notoriously difficult.
The HP un2420 Mobile Broadband Module is a GSM/HSPA+ WWAN card found in older enterprise-class HP laptops (such as the EliteBook 8460p, 8560p, and 2540p series). Originally designed for Windows 7, getting this piece of hardware functional on Windows 10 is not a simple "plug-and-play" experience. This review covers the installation process, stability, and viability of using this legacy hardware on a modern operating system. hp un2420 mobile broadband module driver windows 10 upd
To update the on Windows 10, you must use a manual installation method because official Windows 10 drivers for this older hardware (Qualcomm Gobi2000) are not available . Update Guide: HP un2420 on Windows 10 The keyword "upd" in your search likely refers
Download sp53068 or sp51022. Run the file to extract it; it will typically save to C:\SWSetup\sp51022 or a similar folder. Originally designed for Windows 7, getting this piece