HP Notebooks - Pavilion dv4z 1000 Notebook WWAN Broadband Wireless Driver Download. This package contains the HP Wireless WAN (WWAN) Broadband Wireless Drivers for the supported HP notebooks and operating systems. System requirements: HP hs2300 HSDPA Broadband Wireless Module HP ev2200 1xEVDO Broadband Wireless Module HP ev2210 1xEV-DO Rel. A Wireless Broadband Module. Prerequisites An HP WWAN Model Notebook - A supported, embedded HP WWAN Module - A Subscriber Identity Module (SIM) with data support from an HP Mobile Operating Partner - Wireless Assistant installed (for use with System Software Manager [SSM]) - Power to WWAN must be ON (for use with SSM). Fix/Enhancement: - Adds several changes to enhance throughput. - Updates the installer to correct an issue that prevented the drivers from loading during the pre-installation unbundling process. - Fixes an issue where a Yellow Bang (yellow exclamation point) is displayed beside the "HP hs2300 Broadband Wireless Module" or "HP ev2210 1xEV-DO Rel. A Wireless Broadband Module" in the Device Manager after upgrading. - Fixes an intermittent issue where a "blue screen" event occurs when the WWAN drivers access the operating system NDIS interface. - Fixes an issue where the following error message is returned when uninstalling the WWAN drivers: "scrswi.inf is not deleted from inf folder." - Fixes an issue that occurs under Spanish language installations, where an incorrect message is displayed when uninstalling drivers. - Fixes an issue where some installation messages were not translated to display in the local language. - Fixes issue that may occur when multiple Internet Control Management Protocol (ICMP) sessions are run simultaneously. This Driver download supports: HP Pavilion dv4z-1000 CTO Entertainment PC Notebooks HP Pavilion dv4z-1100 CTO Entertainment PC Notebooks HP Pavilion dv4z-1200 CTO Entertainment PC Notebooks