We are running a WLC 5520 with about 800 accesspoints. Accesspoints are 1600, 1852, 2802, 2702 and 1142. We run software version 8.2.130 right now. We have a very strange problem. Android phones connected to the wifi get an error when downloading the system upgrade files. They download the entire file says 100% done, and after what I think is a kind of CRC check or something Android OS says the file download is abrupted.
Now to the strange thing. This only happens on sites where we have Aironet 1852 accesspoints. When we download the Android OS file on the same SSID, Same Network but when we are connected to a Aironet 1600 everything works just fine.
Anyone seen this error before?
OK. I guess I should go with 8.5.xxx.x then hopefully I will not have any compatible problems with the old APs like 1142.
Is there a compatability matrix some where?