FOCUS Enhancements FOCUS FireStore FS-4 Pro - Manual (Page 102)

FS Functions
86 FS-4 HD and FS-4Pro HD Portable DTE Recorders
9.
Up on successful completion of the upgrade, the FS-4 HD
displays the message:
10.
Hold down the
STOP / POWER OFF
button until the FS-4 HD
shuts down.
11.
Power up the FS-4 HD.
UPGRADE
COMPLETE
PLEASE RESTART