Can you play your music? If not, perhaps the device froze during shutdown the last time you used it. One way to test this is to start pluggin and unpluggin your headphones. If you hear a faint pop sound, the device is still running.
I would try resetting it. If that fails, the only other thing you can to is let it sit for a day or two, at which point, the battery will die. Bbefore you recharge it, repeat the above to make sure it’s off (or else it will take longer to die).
As for updating, you don’t need a screen to do so, since most of the work is done from the computer. Move the power switch to the hold positoin, and hold down either the << button or the middle button (either one will do), while plugging the device in. You can find download firmware from HERE, as well as instructions on how to install it manually (don’t use the updater, since there won’t be any updates for this device, hence its a little more than a waste of time). Once the device is unplugged, the update should take no more than two minutes (probably less).
Please note: you need to know which firmware revision you have in order to know which firmware version to update. If you have a revision 1 Fuze, you’ll need to download the 01.02.31 version. If you have a revision 2 device, 02.03.33. If you don’t know which revision your device is, perhaps Rockbox Utility can help. With your device connected, launch the Utility. If you get a message saying something about a bad configuration, click OK, and select “Autodetect”. If you don’t get this message, press the “change” button in the upper right, and select “Autodetect”.If you have a Revision 1 device, “Sansa Fuze” should be selected.If you have a Revision 2 device, “Sansa Fuze V2” should be selected.
