11850-029
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eMCH (embedded MicroTCA Carrier Hub)
R1.1, July 2021
5.4 Firmware Update
The EMCH serves a web based front end to easily upgrade the devices firmware in field. To
use this utility, first establish an ethernet link over the EMCH uplink port. If not changed, the
standard interface config is as followed:
Table 5: Standard interface configuration
Type http://192.168.1.138/ in your web browser or type “bl” in the command line interface
to call the bootloader. Your browser should show the index page with a button “call
bootloader”. By clicking on this button, a software reset will be triggered and the system will
boot into the bootloader. Wait a few seconds and call http://192.168.1.138/ again. The page
should have changed slightly and will prompt you to enter a password. By default, the
password is “nat”. To leave the bootloader without touching anything, just click on “Leave
Bootloader”.
By clicking on “submint” the upload page should open.
Now select a proper firmware image with the file extension “.srec”. Click upload to flash the
image into the device memory.
NOTE: The upload process will take a few seconds, please don’t interrupt or close the browser
while upgrading.
If succeed, the Message “File Upload Done” is shown. Click on “Reset MCU” to trigger a
software reset. The device should now boot into the new firmware.
NOTE: If something went wrong during the firmware upgrade (e.g. lost of power or
communication during file transfer), the device will boot into the bootloader again instead of
loading the firmware. In this case you can easily repeat the firmware upgrade.
IP address:
192.168.1.138
Netmask:
255.255.255.0
Gateway:
0.0.0.0
