To format the file system
Symptoms: The communicator is in a reboot cycle or does not boot up.
First, check that your battery is not empty.
Key combination: Shift-Tab-F
Caution: Formats the file system. All data you have entered will be lost. This
operation will restore your communicator to the state it was in at the time of
purchase.
Remember that backed up data can be restored in all cases.
If these measures do not help, contact your local dealer.