07-14-2007 12:25 AM - edited 07-03-2021 02:20 PM
Hello
I inadvertently 'ugpraded' an Aironet 1231 to an Lightweight image, and need to
download it back to autonomous.
Documentation on CC says to press the RESET button whilst booting until the
middle light glows red - after that, the AP will set its IP address to 10.0.0.1
and request tftp://255.255.255.255/<filename>.
This works fine, my TFTP server (10.0.0.2, temporary address) responds to the
TFTP GET request, but the AP fails to download the image, timing out very quickly.
Has anyone else successfully 'downgraded' from Lightweight to Autonomous (IS)
image? Can anyone guide me to getting my IS functionality back?
07-14-2007 03:22 AM
1) Make it for sure that your AP image is set to .default.
2) try rebooting your laptop .
3) if during the course of "downgrade" you get "More....." then press space bar.
4) Check for firewall.
07-14-2007 05:31 AM
Hi Venkatash,
The problem could be that the Laptop (used for TFTP) Operating System is hiding the known file type. From Internet Explorer, go into Tools > Folder Options > View, scroll down until you find the parameter Hide extensions for known file types, and uncheck the box. This should eliminate the issue.
Hope this helps!
Rob
07-14-2007 06:23 AM
its very easy to downgrade from lwapp to autonomous Ap, just give an Ip address to ur laptop or to ur PC.. 10.0.0.2 255.0.0.0 in which ur tftp server is installed and with a cross cable attach the Ap and power on .. but remember one thing .. before u power on , press the mode button untill it turn blood red and just leave it .. it will cop the latest ios on ur ap ... but , mind one thing .. turn off the firewall from ur Pc ... or any norton thing .. it will install ...easily
07-14-2007 06:28 AM
sorry once again , u need to change the file extensi to TAR.default.. whatever the file name or ios u download... the name may be this .... c1130-k9w7-tar.123-8.JEB...just change to this .....c1130-k9w7-tar.default and power on the AP
07-15-2007 08:55 PM
Thanks Guys for your reply,
However we have tried all these steps, but no luck.
The TFTP server just times out when it tries to access the IOS.it says transfering 0 bytes and then times out.
Please suggest
07-16-2007 01:44 AM
He guys,
Thanks for all your help.
The issue is resolved.
Regards,
07-16-2007 07:43 AM
Hi Venkatash,
Sounds like a TFTP problem for sure :(
Have a look at the details in the following threads that all have to do with TFTP. There are some great hints for troubleshooting TFTP problems from some of my favourite NetPros like ScottMac,Stephen from Cisco and Jack Young. The likely culprit may be that you need to uncheck "hide extensions for known file types" on your TFTP server;
Maybe try this (highly recommended version)
Solar Winds tftp
http://www.solarwinds.net/Tools/Free_tools/TFTP_Server/
The problem could be that the Laptop (used for TFTP) Operating System is hiding the known file type. From Internet Explorer, go into Tools > Folder Options > View, scroll down until you find the parameter Hide extensions for known file types, and uncheck the box. This should eliminate the issue.
Hope this helps! Good Luck!
Rob
07-19-2007 06:44 AM
Make sure you rename the file in dos and not in windows. It still has a .tar and the end eventho in windows it shows as tar.default etc..
07-19-2007 09:57 AM
I had the same problem, but found in a console screen that it was trying to retreive c1200-k9w7-tar.default and not the full IOS name. So I simply renamed the image c1200-k9w7-tar.default and it seems to be loading fine.
07-18-2018 11:22 AM
1. config your PC Adapter to IP Address 10.0.0.2 Subnet Mask 255.255.255.224
2. Go into AP Rammon
3. Type this command
tar -xtract tftp://10.0.0.2/c1200-k9w7-tar.122-15.JA.tar flash:
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