(The cisco wireless ap1131ag-c-k9 upgrade fat AP document, I personally used it, and successfully upgraded it. The document includes the process of rewriting the IOS file, the software used, the IOS file, and the configuration method document after upgrading to a fat AP. This document includes the following attachments:
3CDaemon.EXE
3CDaemon.ini
Ftpd.log
Profiles.ftp
Tftpd.log
TFTPH/OST.ini
Download Instructions.htm
.....too many files to omit.....)