Network technologies and trends

Dec 26 2009   9:16AM GMT

How to repair a corrupted IOS in Cisco 1250 access point Series 2?

Yasir Irfan Yasir Irfan Profile: Yasir Irfan


In my previous post  I was talking about how to fix the corrupted IOS in Cisco 1250 Series Wireless Access Point. Now in this series let’s see how to fix the solution to fix the corrupted IOS in Cisco 1250 Series Wireless Access Point.


In the previous post we know that whenever an IOS is missing in the Cisco Wireless Access Point you will get the following error


The system is unable to boot automatically because there are no bootable files.

Followed by the promt


There are two ways to fix this problem, in this post I will show you how to fix the problem   by transferring the IOS file to the Cisco Access Point using a TFTP server.



Whenever you boot you IOS corrupted Cisco Access Point and when you get following error at the command prompt




Connect the corrupted access point to any Cisco Catalyst Switch and also connect your PC with a solar winds TFTP server installed to the same switch with the same subnet. In the following example we are configuring the IP address for the PC with Solar winds TFTP server and corrupted access point as follows



Follow the below mentioned steps


Step 1:

Assign the ip address, netmask and default gateway to the IOS corrupted access point by using set command as shown below.


ap:set IP_ADDR


ap:set NETMASK




Step 2:

Initialized the TFTP server in the Cisco Access point by entering “tftp_init” command


ap: tftp_init


 Step 3:

Download the IOS image file for Cisco 1250 Series Access Point from Cisco Web Site (CCO id is required) and remove the file extension (.tar) as shown and copy the file to solar winds TFTP server directory.


Step 4:

Make sure that the solar winds TFTF server is started and the downloaded the IOS image file is placed in the TFTP server directory.


Step 5:

Extract the IOS file downloaded into the Cisco Access Point by using “tar -xtract” command to inflate the image file from your TFTP Server.


ap:  tar –xtract  tftp:// flash:




Step 6:

Once the whole IOS file is extracted the set the boot path in your IOS corrupted Cisco Access Point as shown below

ap:  set BOOT flash: c1250-k9w7-mx.124-10b.JDA3/ c1250-k9w7-mx.124-10b.JDA3


Step 7:

Then you boot your Cisco Wireless Access Point by using a “boot’ command.


ap:  boot


Once the Cisco Wireless Access Point is booted you will see no errors and its working fine. I have also uploaded the video as well which might help you to recover the IOS in a Cisco 1250 Access Point. Same procedure can be applied on other Cisco Access Points as well with proper IOS files. 

 [kml_flashembed movie="" width="425" height="350" wmode="transparent" /]

5  Comments on this Post

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  • Cisco1602
    Thank you very much for the information you are given. Cisco 1602 Access Point demonstrated by the method that you did the installation of the IOS.
    10 pointsBadges:
  • douglasakira
    Hello! My name is Akira, I know you wrote this article long time ago, but I hope you can help me a little.
    We have a Aironet 1130AG and I tried to update the firmware. I received the message "This porecess take about 5~15 minutes, dont close this windows and do not try to open another sites until its end.
    I wait 3 hours and the update and I have no choices, I has to disconnect the AP.
    And then I bricked my AP.
    So I found your blog and tried these steps but I stop on first one, 'cause I cannot set IP address.
    I write the same you posted, only changing the IP Address to my range.
    I tried with enable, without enable... I tried the conf t command, but it not reconigzed...
    But it has valid IP 'cause my DHCP gave it...and  I can ping it...
    but I cannot run tftp_init 'cause its not recognized.
    The teraterm always show me this message: %CAPWAP-3-ERRORLOG: Did not get log server settings from DHCP.
    I haver no Wireless Controller.

    Best regards
    10 pointsBadges:
  • Arayik
    Hello, can you help to download Cisco 1250 latest firmware from cisco. If you can do that please help me.
    10 pointsBadges:
  • Yasir Irfan
    Hi Arayik

    You need to have a valid Smartnet contract to download the firmware. Please contact your local Cisco partner for more details.
    7,295 pointsBadges:
  • jyothsnar
    Hi Yasir,

    I have followed your instructions to repair 881W AP but I am getting following error:

    ap: set BOOT flash:ap801_k9w7_tar.124_21a.JA1 /ap801_k9w7_tar.124_21a.JA1

    ap: boot
    Loading "flash:ap801_k9w7_tar.124_21a.JA1 /ap801_k9w7_tar.124_21a.JA1"...flash:ap801_k9w7_tar.124_21a.JA1 /ap801_k9w7_tar.124_21a.JA1: no such file or directory

    Error loading "flash:ap801_k9w7_tar.124_21a.JA1 /ap801_k9w7_tar.124_21a.JA1"

    Interrupt within 5 seconds to abort boot process.
    Loading "flash:/ap802-k9w7-mx.124-25d.JAX1"...Bootable image segment 0 address range [0x18003000, 0x1b35a000] not in range [0x3000, 0x2280000].

    Error loading "flash:/ap802-k9w7-mx.124-25d.JAX1"

    Interrupt within 5 seconds to abort boot process.
    Boot process failed...

    Please help me
    10 pointsBadges:

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