I am trying to upgrade the IOS of my Aironet AP1231G. It is currently running IOS version 12.2(3)JA ED. I have tried numerous upgrades of assorted versions under the Aironet 1200 and 1230 categories but they do not work. I receive the error "ERROR. The software upgrade was interrupted and was not able to be completed". I have tried via tftp, http and via command line. Anyone know what the issue is? Any help would be great. Thanks.