Is my external GPSDO working with the new FW/SW 4.1.5 ?

The radio is a 6500. I wanted to keep this short but a full explanation and more details are required. so here's the data.

In the Latest v4 Win smartSDR there is no ability to change setting to EXTERNAL furthermore no automatic way to check it for use with external GPSDO and no way to tell it's working, without manually checking like Zero beat WWV, etc which is absurd for a high-end radio like flex. I rarely use windows version, but had to use it to upgrade to v4 firmware and software.

I use the mac version mostly and it NOW always boots up to TCXO and I have to manually change it. I must change the tab to external manually every time I turn the radio on. Marcus says it's in the new Flex v4 firmware. Of course Flex doesn't support the MAC version's function only windows.

Flex has decided to totally remove ability to change this function in windows version? Mac version will change with tab, but "always" boots in TCXO and I have to change it every time i turn the radio on. This is why I'm questioning it. And, YES the GPSDO has been tested (I have a few) still working fine AND verifiable on all the lab test equipment in the shack.

I know the radios supposed automatic boot cycle to search for reference, however there is no automatic way to tell, and the MAC software says it not working the way it supposed to by booting into TCXO. There of course are ways to tell with zero beat WWV etc. but that's absurd on a high end radio like this.

By the way my rdio always booted into External before this upgrade. At this point I'm sure sorry I upgraded to v4 and paid for plus.

Ive been thinking of an 8600 but with this issue unresolved I'm considering alternatives.

I really like the 6500 but this part of the flex seems to be broke without answers.