The AIR-CAP3702E-A-K9 I purchased on eBay came configured in lightweight mode and with an unknown password. I reset it to factory setting by pressing and holding Mode button for 10 seconds or more. It rebooted into the boot loader. First thing to do was to set up a TFTP server on my Mac, which had IP address
10.10.1.46, and put the new image into
/private/tftpboot/.
sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist
sudo launchctl start com.apple.tftpd
After all was done, stop it:
sudo launchctl stop com.apple.tftpd
My USB to serial adapter was Prolific. To install the drivers:
brew tap homebrew/cask-drivers
brew cask install prolific-pl2303
Now, connect to the AP.
screen /dev/cu.usbserial
ap: set DEFAULT_ROUTER 10.10.1.1
ap: set IP_ADDR 10.10.1.200
ap: set NETMASK 255.255.255.0
ap: tftp_init
ap: ether_init
ap: flash_init
ap: tar -xtract tftp://10.10.1.46/ap3g2-k9w7-tar.153-3.JC3.tar flash:
ap: set BOOT flash:/ap3g2-k9w7-mx.153-3.JC3/ap3g2-k9w7-xx.153-3.JC3
ap: boot
The AP rebooted into new image, I was able to ssh to it, but for some reason web interface did not work. Didn't want to spend time troubleshooting this. Just reloaded another image. I also decided to save current software, just in case. For that to work I had to touch
/private/tftpboot/ap3g2-rcvk9w8-mx.tar.
ap>en
ap#archive tar /create tftp://10.10.1.46/ap3g2-rcvk9w8-mx.tar flash:/ap3g2-rcvk9w8-mx
ap#archive download-sw /overwrite /reload tftp://10.10.1.46/ap3g2-k9w7-tar.153-3.JBB5.tar
To configure the access point, follow the instructions in
Cisco IOS Configuration Guide for Autonomous Cisco Aironet Access Points.
