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"The Yaesu App is only tested with FT-950 but it only uses the generic CAT commands so it will probably work with most modern Yaesu radios like FT-2000, FT-5000, FT-9000 and later models. It will not work with the FT-1000x and FT-8×7 models which uses the old version of Yaesu protocol, We plan to add support for them also later"
The later bit seems a while now.
I remain ever hopeful...