Meinberg GPS167LCD-MP - Manual (Page 27)

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Firmware Updates
Whenever the on-board software must be upgraded or modified, the new firmware can
be downloaded to the internal flash memory via the serial port COM0. There is no
need to open the metal case and insert a new EPROM.
If the MENU key on the front panel is pressed while the system is powered up, a
bootstrap-loader is actived and waits for instructions from the serial port COM0. The
new firmware can be sent to GPS167 from any standard PC with serial interface. A
loader program will be shipped together with the file containing the image of the new
firmware.
The contents of the program memory will not be modified until the loader program
has sent the command to erase the flash memory. So if the MENU key is pressed
unintentionally while the system is powered up, the firmware will not be changed
accidentially. After the next power-up, the system will be ready to operate again.
Skilled/Service-Personnel only: Replacing the Lithium Battery
The life time of the lithium battery on the board is at least 10 years. If the need arises
to replace the battery, the following should be noted:
ATTENTION!
Danger of explosion in case of inadequate replacement of
the lithium battery. Only identical batteries or batteries
recommended by the manufacturer must be used for
replacement. The waste battery must be disposed as pro-
posed by the manufacturer of the battery.