4. Internal memory or system errors
Sometimes, for example, removing the battery in mid-operation may cause
errors in the file system of the communicator. If you receive internal memory
or system error messages and/or reboot prompts, or if the device does not
respond to commands normally, resetting the communicator helps you
recover from most of these problems. Try the reset operations in the order
they have been listed: if checking the file system does not help, try removing
temporary files, or format the file system.