We are trying to get a bluetooth signal from a 345, and getting no GTX pairing on the ipad. We removed an Fs210 and 430W which was connected to port 3 in and out at the GTX, and turned the ports off . Both of the cables were removed. After installing an IFD 540, the RS422 out from the 345 to the 210 was removed, and rerouted to a GMX and format changed to GMX FMT 1. That works fine. We are trying to get ADS-B wx to FF on an iPad. The 345 bluetooth was off while the FS 210 was connected per the IM. we turned it back on and are trying to pair it with an iPad. After rebooting the iPad and trying fresh to pair using the 345 install instructions, with a couple different devices, it's apparent the 345 isn't producing a signal. We checked the hsdb to see if it was set to GTN. It's not. Is there something we're missing? Ports off, Bluetooth turned on, pairing instruction filled yo a "T". Is there something else that must be done when removing a 210 and going back to internal bluetooth?