I am trying to upgrade my IOS to (c2801-advipservicesk9-mz.124-25a.bin) from (c2800nm-ipbase-mz.124-15.t7.bin) through my tftp server... i just got the connectivity for my tftp server but when I try to copy tftp flash i am recieving a warning [ File not a valid executable for this system]
Can anyone tell me if this file is valid for the upgrading the above mentioned IOS..
Ohh and i almost forgot to mention when i copy this file to my laptop and put it onto the tftp server it shows to be a VLC media player file although its an IOS image ...
and when I try to back up my existing IOS (c2800nm-ipbase-mz.124-15.t7.bin) it give the error opening flash ... file not found ..
i donot understand if the file is not found in the flash how is the router running right now what the problem??