| 69 | == Manual Reinstall of the OS == |
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| 71 | In case the OS is not functioning it may be necessary to perform an upgrade of the OS using a local network connection to a PC. It is not possible to use a USB flash to reinstall the OS. To update the 825 Linux kernel a tftpserver is required. Several tftp server programs are available. One that may be used for windows is tftpd32 http://tftpd32.jounin.net/. |
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| 73 | 1.Set up the tftpserver on your Windows computer. If you are using tftpd32 the default settings should work. It may be best to disable the additional server options, and only leave tftp enabled. Make sure the directory is set to the path that you have copied the “image.bin” file to. |
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| 75 | 2.Make sure the PC running the tftpserver and the 825 indicator are connected on the same network. It may be possible to use a crossover cable and only have the PC connected directly to the 825. It is preferable to use a simple network switch to connect the devices. This eliminates the problem that the PC may detect loss of entire network whenever power is removed from the 825. |
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| 77 | 3.Turn on the 825 indicator. |
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| 79 | 4.Select “Setup Menu”, “Communication”, and “Network”. Set “DHCP” to “No”. Set the “Client IP” to an IP address that is not in use by any device on the network, but similar to the PC address. For example if the PC address is “192.168.0.5” you may set the 825 to “192.168.0.8”. Set the “Netmask” to the same netmask as the PC, which is often “255.255.255.0”. The “Gateway”, “Broadcast”, and “Nameserver” may be set to “0.0.0.0”. You may verify the Windows PC settings by clicking “Start”, “Run” and type “Cmd”. At the command prompt type “ipconfig”. Press “ENTER” on the 825 to save changes. Press “ESC” to exit the “Communications” menu and return to the “Setup Menu”. |
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| 81 | 5.Select “Update Software Menu”. Select “Settings”. Set the “Server IP” to the IP address of the Windows PC running the tftpserver. Set “File Type” to “3” or “bin”. Set the “Filename” to “image.bin”. The prompts “1.” Through “6.” Allow a kernel command line to be specified. For example, if you want kernel messages to appear on COM2 to set “1.” to “console=ttyS1”. (“console=null” suppresses kernel messages, or blank provides kernel messages on “COM1”) Press “ENTER” to save changes. |
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| 83 | 6.Select “Download kernel to flash”. The display will show “Downloading Image ‘image.bin’ from 192.168.0.5 (or the appropriate IP address of the server). This may take a few minutes are the kernel is downloaded into RAM. After a brief delay the display will show “DO NOT UNPLUG OR SWITCH OFF POWER”. The NOR flash area to contain the kernel will then be erased and the kernel will be written to flash. This may take several minutes. The display will show “Power off and back on”. (Older versions of the bootloader may show “Press any key”, but still require a power off and on). |
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| 85 | 7.Power off and on the indicator. |
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