And always, keep a backup copy of your working configuration before touching any firmware upgrade.
Then proceed with tftpdnld command.
Cisco firmware filenames follow a specific structure that identifies the hardware platform, feature set, version, and file format. Below is the deconstruction of the filename: Ap3g1-k9w7-tar.152-2.jb.tar
: This is the "featureset" indicator. In Cisco terminology, k9w7 denotes Autonomous (Standalone) IOS . This contrasts with k9w8 , which is "Lightweight" and requires a Wireless LAN Controller (WLC) to function. And always, keep a backup copy of your