WindowsDownload and run the installer:
Z-Flash Windows Installer
- If updating an HS-WX300 R2 device make sure you update to 2.2 first. Only update to 2.2.1 if for some reason the 2.2 update fails. 2.2 and 2.2.1 are the exact same firmware, only the version number is different.
Added firmware files for HS-WX300 R2 version 2.2 and 2.2.1