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Because of the command nand erase.chip, the ESN was wiped out and assigned the number zero. Change the ESN back to its assigned number
with the following AT command.
AT#ESN <ESN_Number> OVERRIDE
Example: AT#ESN 5052000024 OVERRIDE
After the Firmware update it is necessary to set the factory defaults on all the parameters.
Type: AT#FACTORY
8 Firmware Update
This section outlines how to upgrade the LMU-5541's firmware.
8.1 Requirements
Maintenance computer with serial connector or serial adaptor
Download and install two programs: TFTP32 or TFTP64, and WinSCP. If your computer is a 64 bit version, then download tftpd64
tftpd download (http://tftpd32.jounin.net)
winscp download (http://winscp.net)
All Firmware related files
Co-processor image.bin file (when applicable)
Terminal emulation program such as HyperTerminal, Putty, TeraTerminal, set to a Baud Rate of 115200
Power supply +12VDC
Ethernet cable
USB to mini-USB cable
CalAmp 4-pin Power cable p/n 5C888
CalAmp programming pigtail, serial adaptor cable p/n 5C940
CalAmp serial cable p/n 134364-SER
4-pin header at location J25. (optional)
8.2 Preparation
In the C: drive of the maintenance computer create a folder called tftpboot
C:\tftpboot
Place all of the firmware and u-boot-lmu related files that were provided into the tftpboot folder
Connect the 5-pin connector of the CalAmp serial cable 134364-SER into the AUX1 connector of the LMU-5541™. Connect the DB-9 connector
of 134364-SER to the serial connector or serial adaptor connected to the
maintenance computer.
Connect the mini USB to the LMU-5541™ and connect the other end to a USB slot on your computer.
Connect 4-pin power harness SC5888 to the power connector on the LMU-5541™. Connect the wires of the power harness to +12VDC power
supply; RED +12VDC, WHT +12VDC (ignition), BLK Ground
Take an Ethernet cable and connect one end to the LMU-5541™ RJ-45 connector and the other end to the maintenance computer.
Launch the terminal emulation program.
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Power up the LMU-5541™.
8.3 Maintenance computer network setup
Change the IP settings on the maintenance computer to match the subnet of the LMU-5541™
Go to Control Panel ? Network and Internet ? Network and Sharing Center ? Change adaptor settings ? Local Area Connection ? Properties ?
Internet Protocol Version 4 (TCP/IPv4) ? Properties ?
Select "Use the following IP address:"
Enter the following IP settings:
Ethernet IP address = 192.168.1.189
Subnet mask = 255.255.255.0
Default gateway = 192.168.1.55
Select OK
Ensure WiFi is disabled on the maintenance computer.
8.4 Firmware update
Maintenance computer with serial connector or serial adaptor
Download and install two programs: TFTP32 or TFTP64, and WinSCP. If your computer is a 64 bit version, then download tftpd64
tftpd download (http://tftpd32.jounin.net)
winscp download (http://winscp.net)
All Firmware related files
Co-processor image.bin file (when applicable)
Terminal emulation program such as HyperTerminal, Putty, TeraTerminal, set to a Baud Rate of 115200
Power supply +12VDC
Ethernet cable
CalAmp 4-pin Power cable p/n 5C888
CalAmp programming pigtail, serial adaptor cable p/n 5C940
CalAmp serial cable p/n 134364-SER
4-pin header at location J25. (optional)
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For the Current Directory window, Browse for Directory C:\tftpboot
For the Server interface window, select 192.168.1.189
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