Only early versions of the Huawei E220 USB Modem need to have their firmware updating to work under Vista, and all other USB devices should be OK working under Vista by just updating the Vodafone Mobile Broadband software to the latest relevant version - the appropriate Vista drivers are embedded in the software update package.
Please ensure that you choose the correct version of software for your device by reviewing the readme files on the latest software page.
How to update your Huawei E220 USB Modem so that it works on Windows Vista
SYSTEM CHECK - Please complete the following steps on Windows XP ONLY.
You will need to upgrade the firmware and software of your Huawei E220 USB Modem on a Windows XP machine before you can use the USB Modem on a Windows Vista machine.
PREPARATION - Download these files and save them to a folder on your PC - ready to use in the guide below.
Please complete both parts of the process below in one session.
Part 1: Updating the firmware
You are now ready to upgrade the software.
Part 2: Updating the Vodafone Mobile Broadband Lite software
Your USB Modem is now ready for use on Windows Vista.