Same dual-boot, but I use different steps: 1. Connect to PC 1a. Ensure BT on PC is running properly and in discover mode. 1b. On 770, tap Tools->Control Panel->Phone and select your PC as the phone. 1c. Exit. 2. Transfer files (from 770 to PC). 2a. Start filemanager, scroll the directory list on left side of FM, select a 770 directory. 2b. Select a file on 770 on the right side of the FM. 2c. Select Edit->Copy. 2d. Scroll to bottom of directory list on left side of FM, select your BT device name (the PC). 2e. Select Edit->Paste. 2. Transfer files (from PC to 770). 2a. Start filemanager, scroll to bottom of directory list on left side of FM, select your BT device name (the PC). 2b. Select a file from the file list on the right side of the FM. 2c. Select Edit->Copy. 2d. Scroll the directory list on left side of FM, select a 770 directory. 2d. Select Edit->Paste.