Upgrading to CBOS 2.4.1 With Cisco's TFTP Server

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Okay kids, you've talked your ISP into sending you a CBOS bin file and now you are wondering what the heck to do with it. Well Here is where this page comes into play. Hopefully by the time you are done reading/printing this page you should be ready to go. Using a TFTP is alot faster and easier than doing the hyperterminal upgrade. On the downside a TFTP upgrade can destroy your router if not done correctly. I always recommend the Hyperterminal method for saftey sake. Never do a TFTP upgrade remotely, if you are gonna do it make sure you take it off the network (if it's on one) and hook it directly to a single computer with the crossover cable, this ensures that you don't get a stray bit that will kill your router.
The first step in this process is you are going to have to download a tftp server. Here is the link for download.com It's up to you to setup the TFTP server but once you have it setup you are ready to go. For the purposes of this tutorial I will use Cisco's Old TFTP server program that they no longer have available on their website. If I can find the program again I will post it for download.
	Click on your START button then Programs. In here you should now have a CISCO TFTP Server icon. Go ahead and click on it.
	Now you should get the main TFTP screen.
	Now click on View and then onto Options
	In here you want to make sure the TFTP server root directory is where your CBOS bin files are.
	Once again we need to get into hyperterminal, (remember how it's setup??)Hyperterminal Setup Next we need to get into enable mode.
	From here we need to make sure that tftp is enabled. The command is set tftp enable then hit enter on the keyboard. Next you want to type in tftp image 10.0.0.100 nsrouter.c675.2.4.1.bin then hit enter on the keyboard. The 10.0.0.100 is the internal IP address of the computer you have running the Cisco TFTP server nsrouter.c675.2.4.1.bin is the name of the CBOS file you have in your TFTP server root directory, In this example I'm using the CBOS file for a Cisco 675. Make sure that you have not changed the filename from what cisco has it set at.
	Once you hit enter you should get a message saying DOWNLOADING LEGACY IMAGE and then it will come up with DONE. Next It should respond with SAVING IMAGE and then DONE. Finally it will tell you to reboot the CPE (Your cisco router). You have to physically pull the power cable, wait 10 seconds and then plug it back in.
	When you plug your router back in your screen should fill up with messages. AT NO TIME DURING THIS PROCESS SHOULD YOU POWERCYCLE YOUR ROUTER OR DO ANYTHING ON THE KEYBOARD. Once it gets down to PRESS ENTER TO CONTINUE Go ahead and press your Enter key on your keyboard. It will now ask your for the router password. From all the times I've upgraded CBOS's the router has kept the account settings. If for some reason your upgrade does not you'll have to contact your ISP for your router configuration.

Upgrading to CBOS 2.4.1 With Cisco's TFTP Server