I have a AIR-AP1230B-E-K9 access point, which worked fine in its original hardware configuration, which included an AIR-MP20B mini-PCI radio module (802.11b standard).
I decided I wanted to upgrade it to be a dual wireless, 2.4Ghz and 5Ghz access point and so I installed an AIR-RM21A-E-K9 module.
At the same time, I upgraded the IOS to C1200 Software (C1200-K9W7-M), Version 12.3(8)JEA and the access point worked fine and supported both 802.11b and 802.11a.
I wanted to increase the throughput of the 2.4Ghz radio and so decided to install an AIR-MP21G-A-K9 upgrade module, which should enable 802.11g compatability.
However when I boot the AP, I get the following error message:
Mar 6 19:40:25.109: %DOT11-2-NO_FIRMWARE: Interface Dot11Radio0, no radio firmware file (flash:/c1200-k9w7-mx.123-8.JEA/5501.img) was found
Mar 6 19:40:25.111: %DOT11-2-NO_FIRMWARE: Interface Dot11Radio0, no radio firmware file (flash:/5501.img) was found
Mar 6 19:40:25.112: %DOT11-2-RESET_RADIO: Interface Dot11Radio0, Radio firmware file not found, Trying hardware reset on radio
It appears that the radio firmware file "5501.img" is missing from the IOS image!
I've tried downloading several of the older IOS image files and un-tar'd them, but none of them seem to contain the "5501.img" file.
I've read all the associated documents relating to the AP1200 and as far as I can see, it should support this 802.11g and 802.11a configuration, so where am I going wrong?
Could someone please explain how to resolve this issue or why this configuration is not supported?