KFDtool author here (duggerd elsewhere)
The offical list of compatible/tested radios is here (please get in touch if you have tested something not on the tested compatible list):
Here's also instructions on modifying the Motorola NTN8613C Hirose adapter for use with Motorola and EFJ radios:
This is possible, though it has some side effects. I performed the following on a NTN8613C XTS to Hirose adapter.
#1 - audio accessories will continuously transmit when used with the adapter (OPT_SEL1 is pulled low by the audio accessory but OPT_SEL2 is tied low all the time)
#2 - this may trigger the man down function as OPT_SEL2 is tied low all the time even when CTS is not pulled low (CTS low = keyload mode for Motorola, pulled low by KVL/KFDtool)
#3 - for EFJ radios, you need to connect the adapter to the Hirose cable and the KVL/KFDtool first, then connect to the radio. If you connect the adapter to the radio first and then connect the Hirose cable it will not work. This is because multiple pins need to be asserted simultaneously for the EFJ radio to go into keyload mode.
Here's a truth table I found in a service manual showing the OPT_SEL1 and OPT_SEL2 states:
View attachment 85402
You will need to bridge two of the connections from the Hirose connector per this image (shorts OPT_SEL2 to GND):
View attachment 85403