Disaster Recovery

***Official Disclaimer*** Neither I nor Alltel/Windstream/Your ISP/Anyone else will be held accountable for what you or anyone else does inside your router or on your computer or any software you download and/or install. If you change/remove/corrupt something up on your computer or router or equipment and someone has to fix it or replace it for you and charge you money/services/beer for fixing it then it's your responsibility not mine nor is it Alltel/Windstream's or your ISP's or anyone else's. I give you the information that I have learned/found/acquired. What you do with it is up to you. Do not email me with questions or complaints about why your router/computer/equipment/etc. doesn't work. I cannot guarantee that this config or these settings or information on this site will work for everyone. I can't test all solutions possible because I don't know them all and there are not enough hours in the day/week/month/year for me to test every combination possible. I have tested/used these configurations/software and they work for me. I am just letting my findings be open to help others in times of need at no cost. If you do not understand these instructions/configurations/software or are afraid that you will mess up the computer/router/equipment/software then you will want to contact a computer/network technician to help fix/configure/build what you need done.
	It's finally happened, either by a storm flashing your router, a messed up CBOS upgrade or space ninjas launching an attack on your router. Whatever the case is, all you know is that you can't get onto the internet and when you try to telnet to your router you get denied. Being the computer savvy gal or guy that you are you know that you can get into your router thru hyperterminal. Only to be faced with the following screen. An equal sign with a right angle bracket. What has happened here is your CBOS has been wiped from the router... Just like formatting your hard drive and you get that message that says "MISSING OPERATING SYSTEM" Hopefully you will never have to use this page but in the event that those space ninjas lay claim to your region of cyberspace you'll be back online within 10 minutes. Using this technique is not guaranteed to work but it will in most cases and gives you a chance to recover that router before you have to give up and buy another one.
	The first thing that you want to do is configure a hypterterminal connection. If you haven't setup one yet here are the instructions. Hyperterminal Setup The next thing that you will need is a cbos bin file. At this point it doesn't matter which version you have, just as long as it's the bin file for your router. 675/677/678. In the example here I am using CBOS 2.4.1 for a Cisco 675 router. If you are using an earlier version of CBOS your screens may look different from the ones here but the steps are still the same. Just make sure to read what is printed on your screen, if the router tells you to reboot the router then do so. One last thing that you will need is the default configuration from your ISP or DSL providor. This contain information such as your login and password, static IP information if you have static IP's etc.....
	Once you've gotten into your router and see the boot prompt you want to make sure there is no fragmented information still somewhere in the NVRAM. What you will want to do is clear out all the sectors by typing in the following, making sure to hit enter after each line. es 0 es 1 es 2 es 3 es 4 es 5 es 6 Once you've cleared out each sector you are ready to reinstall CBOS from scratch. Make sure that you know where on your computer your CBOS file is. I recommend placing it on the root of your C: Drive such as c:\nsrouter.c677.full.2.3.5.012.bin
	The next step here type in df 10008000 and then hit enter on the keyboard. Yes those are zeros and not uppercase letter o's
	Once you hit enter, quickly click on the Transfer option and then select Send File
	Now a window will come up asking for the file name. Click on browse and select the CBOS file you have, then hit the send button. Also make sure the protocol is set to Xmodem
	This next screen will show the progress of your download. This will take about 5 or so minutes.
	When the send screen disappears it will tell you that the download is complete. The area where it tells you how many bytes were transfered is important, WRITE THIS DOWN, you will need this number soon. In this example the number is 000f2000.
	Next you will once again have to clear out sectors. This time we only need to do sectors 0 thru 5 es 0 es 1 es 2 es 3 es 4 es 5
	Here is where that number I told you to write down comes into play. Now type in pb 10008000 fee00000 000f2000 The last part is the number I had you write down. After this hit ENTER on the keyboard.
	The flashing should take just a couple of seconds. Afterwards you should get the message FLASH PROGRAMMED. Once you get this message unplug the power on your router for 10 seconds and then plug it back in.
	Once you reboot the router you'll see alot of messages scroll by as the router programs itself. Finally at the end it will ask you to hit enter to continue.
	Once you hit enter it will prompt you for a password, Being as all the information has been wiped there will be no password. Just hit enter again. From here just type in en then hit ENTER, once again you will be asked for the password. Just hit ENTER again. You are now in enable mode. From here you will now be able to enter your router configuration information. Most likely you will have to contact your ISP or DSL providor for this information. If you have gotten to this point, You have successfully recovered your router.

Disaster Recovery