I have recently bought 3 xbees, 2 of which I have configured (1 Coordinator API, and 1 Router AT). I want my 3rd Xbee to also be a Router AT. However unlike the others, when I plug this radio module into my computer, it is assigned a port automatically by the computer as it is supposed to, and after that it's even recognized, by my computer in Device Manager, and X-CTU latest & old version/interface as well. However in the old interface/version of X-CTU when I choose the com port, and click the main "Test/Query" button, an error appears and says "Unable to open com port", and no matter how much I fiddle around with it, it always comes down to that statement. In the new version of X-CTU, however, it's not at all recognized, no matter how many times I try to add/look for radio modules, and when I try to recover/reprogram this Xbee, it gives me the error "There is not an active boot loader in this module", which is after it gives me the prompt of "Action Required", and even after pressing the reset button about a million times, the message doesn't go away as it's supposed to.
Any help regarding this troubling issue, of getting my Xbee to respond, is highly appreciated.