Please make sure that you are in your files directory, prior to uploading. Type 'gfiles' (without the quotes) to go to the files directory area. When you press 'u' for upload, CCN will ask for the protocol. If you have ZModem, select that option as it works best. Start upload transfer in your comm software menu (press the 'PageUp' key on your computer if you are using a PC), to tell your comm program to send the file. It will ask you where the file is located and you must enter in the proper information such as directory. When you are done, press enter and the file should start uploading. If you have 'Automatic' selected in your comm software, the uploading will be automatically controlled and will start as soon as you select the file to be transferred.