I tried the V.90 flash upgrade for Hayes Accura 5674US (http://www.windrivers.com/scripts/driverd.asp?loc=http://www.windrivers.com/company/hayes/download/v90/5674v90.exe) and the process failed and corrupted the modem's flash memory. My modem is now useless.

Anyone actually got it to work, or is this flash upgrade broken?