They had been working since the firmware installation (by xctu).They (3 modules:1 collector,1 router,1 end-device) could communicate (by xctu) to each other.24 hours after i kept on woriking on them but the ftdi could not recognize them all as they were broken(all in the same time) or in a freeze-like state
What do you mean by the FTDI could not recognize them? What are you connecting the radio module to? What is the exact message you are getting and from what software?