Broadband Modem (Huawei E303) not connecting

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http://forums.fedoraforum.org – I've been trying to install my broadband modem on Fedora 17, using the included files on the device itself first, then using usb_modeswitch ...etc. ...but it never works, unless I do one thing, which is start my computer on Windows, then fire-up the stick modem, make sure it's working, then restart to Fedora 17. Otherwise, it doesn't work at all. If I start with fedora, or if i stick it in the computer after logging in, or anything that doesn't include the exact steps above: it does not connect, and is detected like a flash drive. What do I do? (HowTos)