What is "Supplementary AP Bundle Images " for WLC 2504 used for?

[Herman2018]

Hi what is below AP bundle image used for? If I upgrade wireless controller software, will it already include AP image as well? Please advise, thanks in advance. 

Supplementary AP Bundle Images for Cisco 2504 Series WLC Release 8.5. This bundle is mandatory to support AP802,AP803,AP1530, AP1550 , AP1570 and AP1600.
AIR-CT2500-AP_BUNDLE-K9-8-5-161-0.aes

[Scott Fella · Accepted solution]

There is release notes stating that it’s for the specific ap images that are not part of the main image. On the download, it shows you what AP’s the file is need for.

[Hemanth Shanthapp]

How to upgrade the AP bundle image, should I download both, main image and ap bundle at a time and reload the controller or should I need to do one by one. For AP bundle should I select code or image

[Scott Fella]

It's a seperate image and you would select code.

Click Download to download the software to the Cisco WLC.

A message indicating the status of the download is displayed.

Note

For Cisco 2504 WLC, Cisco 5508 WLC, and Cisco WiSM2, the Cisco WLC software image is split into two images: the Base Install image and the Supplementary AP Bundle image. Therefore, in order to upgrade, repeat Step 2 through Step 14 to complete the installation of both the Base Install image and the Supplementary AP Bundle image. Download the Supplementary AP Bundle image only if you are using any of these APs: AP802, AP803, Cisco Aironet 1530 Series AP, Cisco Aironet 1550 Series AP (with 128-MB memory), Cisco Aironet 1570 Series APs, Cisco Aironet 1600 Series APs, or all of these APs.

Note	Ensure that you choose the File Type as Code for both the images.

https://www.cisco.com/c/en/us/td/docs/wireless/controller/release/notes/crn85mr5.html#upgrade-instructions_85

[lemuel_isaac]

Verifying below command helps verify if all your AP models are supported on the new code.
>show ap bundle all

Primary Version : 8.5.182.105

AP Supplement Bundle : Not Installed

Primary AP Image Size Supported AP's
---------------- ---- ------------
ap1g1 13192 AP700
ap1g4 25852 AP1850/1810
ap1g5 22240 AP1815,1540
ap3g1 10168 AP3500
ap3g2 15392 AP2600,3600
ap3g3 39516 AP2800,3800,1560
c3700 14372 AP1700,2700,3700

Secondary Version : 8.5.171.4

AP Supplement Bundle : Installed

Secondary AP Image Size Supported AP's
------------------ ---- ------------
ap1g1 13192 AP700
ap1g2 13660 AP1600
ap1g3 15380 AP1530
ap1g4 25864 AP1850/1810
ap1g5 22240 AP1815,1540
ap3g1 10168 AP3500
ap3g2 15380 AP2600,3600
ap3g3 39516 AP2800,3800,1560
ap801 8468 AP802
ap802 9968 AP802
c1550 10948 AP1550(128MB)
c1570 13052 AP1570
c3700 14372 AP1700,2700,3700