Unable to convert some 2802/3802 due to radio mac address alignment

[jupiter519]

Hello;

I have few 2802/3802 AP that will not convert to bridge mode.  I have tried several firmware using 3504 and ME.  This is the message that I get on the controller:

(Cisco Controller) >config ap mode flex+bridge MAP4-3802E

This AP does not support mesh mode due to radio mac address alignment.
(Cisco Controller) >

Anyone knows what this mean?

Thank you,