Make sure that “MIDI Channel” under the “Global” tab in Patch Base matches the MIDI Receive Channel on your TX81Z. To check the MIDI Receive Channel on the TX81Z, press Utility, then use the Parameter buttons to navigate to “Midi Control?” and press “Yes/On” and the screen should read “Basic Rcv.Ch=”. Use the Data Entry buttons to change the Receive channel on the TX81Z.
If you see “Memory Protected” on the TX81Z when you try to save a patch to the synth, that means that Memory Protection is turned on.
To turn it off, press Utility on the TX81Z, then use the Parameter buttons to navigate to “Mem Protect”. Press “No/Off” to make the screen read “Mem Protect:off”. Please note that this needs to be done each time you turn on the TX81Z, as it resets Memory Protect to “on” when it is powered on.
When you make a change to the Voice Bank on the TX81Z, you should see “Midi Received” on the TX81Z screen.