I have two 5.2 access points that after configuration will now not boot up tried to overide them with a 6 pin rj-11 plug and still nothing any help would be appreciated and in unrelated news i have pics of what an ap cluster looks like after direct contact with lightning its not pretty.
It sounds like the radios are corrupted. Contact your reseller to see if they are still under warranty and if so you should request an RMA. What version were you coming from and going to? How did you do the upgrade? Did you copy over the latest boot.bin?