Aironet 1100 ap amber led light

http://happyrouter.com/how-to-configure-a-cisco-wireless-access-point-ap-from-scratch

Try Putty and a 9pin male to RJ45 RS232 serial console cable.
the instructions are in the link provided here:

http://wirelesslanprofessionals.com/wp-content/uploads/2010/01/Password-Recovery-on-Cisco-APs.pdf

I’m happy to help further over the phone at https://www.6ya.com/expert/matt_7e951e081251ffbc

Sounds like the network connection to the AP is shot. Try a different cable, different port on the switch, or repower the device.

On console you will see..AP: Step 1.Type format flash: on the AP and then hit enter Step 2. Enter the set command to assign an IP address, subnet mask, and default gateway tothe access point. Your entries should look like this example: bridge: set IP_ADDR 192.168.133.160bridge: set NETMASK 255.255.255.0bridge: set DEFAULT_ROUTER 192.168.133.1Note:-The system you are using must have tftpserver recomend by Cisco.You can download it from link givenbelow:http://tftpd32.jounin.net Also load the IOS file in the tftp server.Before step3.Step 3.Enter the tftp_init command to prepare the access point for TFTPbridge:tftp_initStep 4. Enter the tar command to load and inflate the new image from your TFTPserver. The command must include this information: .the -xtract option, which inflates theimage when it is loaded .the IP address of your TFTP server .the directory on the TFTPserver that contains the image .the name of the image .the destination for the image (theaccess point Flash) Your entry might look like this example: bridge: tar -xtracttftp://192.168.130.222/images/c1310-k9w7-tar.122_15.JA1 flash:In the meantime if you needassistance please feel free to contact me at any time.

British only say dodgy. so bingo for UK?
reckon is only said by us confederates, rebels.lol well the Arris (SB5101U) moldem is first , its LED happy./

SOUNDS LIKE IT IS BAD DO ME, IF MODEM WORKS
AND ROUTER FAILS THEN ROUTERS IS BAD.
But any router made can be not configured at all.
as in hard reset and fails. so reDO alo that. in the Airport router
AirPort extreme
Apple AirPort Extreme 802.11ac User Manual lets read some pages router
wan jack wired to wan jack on modem, check
the AP status LED light
off means no power.
sold amber means AP is process of starting up;.


SOLD GREEN LED: is good
Flashing Amber (orange/) means.
Your AirPort Extreme can't establish a connection to the network or the Internet,
or is encountering a problem. Use AirPort Utility to get information about what
might cause the status light to flash amber. See "If Your AirPort Extreme Status
Light Flashes Amber" on page 18.

the error above amber blink means the AP can not connect to the ARRIS MODEM. so reset it first. reset it by only unpluging AC power from wall for 5min and put back and wait 15min or until modem shows fully connected, to ISP./
the router is last not first. ISP not down today.
if the modem keeps failing call the ISP..
one can wire connect a PC directly tot the modem and test that way
but I will show a page on that now.

https://red-dot-geek.com/connect-pc-modem-ethernet-cable/


now you learned how to test the modem first and then router.
wired
once wired works both modem and router
we play WIFI H3LL all day long, ask. can do but endless causes to fail, in truth.

From the installation guide for this AP, I find the following:

LED Indicators

The unit has LED activity indicators on the front of the case provide a status display indicating error conditions, transmission, and network activity for the 802.11a (amber) radio or the 802.11b/g (green) radio.

802.11a Activity LED Amber

The amber LED flashes three times per second until firmware is loaded. During boot, 802.11a mobiles cannot associate. After adoption, the amber LED is steady or flashes with 802.11a radio traffic.

The amber LED flashes once per second if an error prevents the 802.11a radio from operating normally.

802.11b/g Activity LED Green

The green LED flashes three times per second until firmware is loaded. During boot, 802.11b/g mobiles cannot associate. After adoption, the green LED is steady or flashes with 802.11b/g radio traffic.

The green LED flashes once per second if an error prevents the 802.11b/g radio from operating normally.

From this, it appears that the 802.11A radio is malfunctioning.

Here is the Motorola support web page for this device.

Reason: Previous authentication no longer valid

This suggetss it has the wrong password or the wrong authenticaiton type (WEP vs WPA, for example)

if ur using IOS autonomous AP, then u'll need to configure the bvi interface to get an ip address and then enable the interface. once it has an ip, u'll need to configure the ssid, vlan, etc - choices include doing so with the CLI or web page GUI. U'll need to enable the built-in web server then u can access it via the web interface to setup the ssid, any vlans, radius, etc. good luck.

run wireshark,  if you see it trying to access 10.0.0.1 via TFTP, IOS was wiped,  just set a tftp server on that address and it will download the dfault image.  search cisco to find out the name of the file it is looking for, or look through the wireshark packets

Toast...looks like you killed your entire IOS installation...it will have to be reloaded to the flash...