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I have two Icom F50 (non-V) radios that are reporting they are on firmware rev 2.3 / sum 1B90 that I am trying to identify what version of cloning software I need to program them. I have tried multiple version of the F50 and the F50MDC software, but none will discover these two radios. The other radios I have are running older firmware and are able to be programmed no problem so I know the programming cable works. So far I've tried:
CS-F50 v1.3 (Worked with the other radios)
CS-F50 v1.7
CS-F50 v2.1
CS-F50MDC v2.1

Any help would be greatly appreciated.