Toshiba FC-22 Manual page 222

Click "Add" Button, and open "Install New Modem" wizard.
And then, check "Don't detect my modem; I will select it from a list", and click "Next" button.
Click "Have Disk" button, and then select a folder download file is stored in.
FC-22 FIRMWARE UPDATING 5 - 16 January 2000 © TOSHIBA TEC