Do not just double-click the setup file. Follow these steps exactly:
Extract the ZIP to C:\drivers\un2420
Manual Update (Preferred Method):
Alternative (Use INF file):
Reboot normally.
Q: Why can't I just use the official HP Windows 7 driver? A: Microsoft changed the NDIS driver model in Windows 8+. The Win7 driver will install but throws a Code 31 because legacy filter drivers fail to load.
Q: My SIM isn't detected. A: Re-seat the SIM card. The un2420 is picky about 4G SIMs – it only supports 3G/HSPA (max 7.2 Mbps down). A modern 4G/LTE SIM will work, but only at 3G speeds. hp un2420 mobile broadband module driver windows 10 repack
Q: Does this work on 64-bit Windows 10? A: Yes. The repack includes both 32-bit and 64-bit CAT files.
Leave a comment below if this worked for your specific model. I will update the post if new issues arise. Do not just double-click the setup file
Scan the .sys and .dll files on VirusTotal. A false positive for “HackTool:Win32/Keygen” is common due to the unsigned nature. But if you see “Trojan:Win32/Bearfoos” – delete immediately.