In normal operation, the StrataLink24 application software with all its supporting OS and device driver modules will be loaded from non-volatile Flash device to the SDRAM at boot time. In the event that the application software is corrupted and the system cannot boot normally, a default basic application will be loaded by the bootloader instead.
It is possible to recover from this by loading the normal firmware from the bootloader.
The procedure that follows assumes that the system does not come up in a normal operating mode upon a regular power cycle. In this state, the system will likely not have an Ethernet management port that is active.
A PC with Ethernet and serial port is required to recover the firmware.
- Insert/connect a Trango specific comport (serial) adapter to the GE2 SFP connector.
- Connect the PC’s Ethernet port to the management port (GE1) of the target system.
- Power cycle the SL24 by removing power and reapplying it.
- Connect to the serial console with a terminal emulation program such as: Putty, SecureCRT or HyperTerminal. The serial port settings are 115200, 8, N, 1, none. Make sure to wait for the bootup cycle, which may take several minutes.
- When the system presents a login prompt, enter:
- Enable the tftp server in the SL24:
# in.tftpd –l –s /tmp
- Configure the IP of the target management port:
# ifconfig eth1 192.168.0.100 netmask 255.255.255.0
- Configure the IP address on the host PC to be in the same subnet, for example 192.168.0.101 with subnet mask 255.255.255.0.
- Download the firmware to apply to the radio and extract the omu_fw_24.bin file from the SL24_version.tar.gz file. For Windows users, consider using gzip or 7-Zip.
- Transfer the firmware image from the PC to the SL24. Assuming the filename is: omu_fw_24.bin
- From a Linux host PC:
# tftp –g –r omu_fw_24.bin –l omu_fw_24.bin 192.168.0.100
- From Windows:
C:\>tftp -i 192.168.0.100 put omu_fw_24.bin
- From Mac terminal:
tftp> mode binary
tftp> connect 192.168.100.100
tftp> put omu_fw_24.bin
- On the SL24 apply the firmware upgrade.:
# flashupdate rootfs
- After a few minutes of burning the image to the flash device, the target system will return with a successful completion map of the image.
- Set the image to load at boot:
# flashupdate write_interface
- Reboot the system:
The system should come up normally. A complete firmware upgrade should now be completed to ensure all necessary software is installed.