I recently got my hands on an Aironet 1220B that has been converted from VxWorks to IOS. I also have the G upgrade kit waiting for install.
As it stands right now, when I power the device it goes to an AP: prompt. While watching it boot over console it says there is no image file present. However, the latest IOS is in the XMODEM directory, but it says I don't have permission to access it.
I've tried to tftp the update to the device. It'll let me tftp_init, I try to tar -xtract tftp://etc. and it times out.
Any suggestions would be greatly appreciated!
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
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!