Spoke to one of YiHi's rep over the phone and got a much clearer understanding of the SXQ-I software.
Basically, Configurations 1~5 are similar to say escribe's profile settings.
If you have 5 atty's running on ni200, Ti, SS304, KANTHAL A1 and Dicode's nife80 respectively, you can dial in the settings for each of these wires and save them into configuration 1 to 5.
So say for example you're on Kanthal A1 which is your fourth atty, you can go to Configuration 4 in SXQI and select watts and then select the wattage you would want to vape on. The MANUAL TCR and other TC related adjustments would still be there but you can ignore them as they wouldn't have any effects on your settings since the device recognizes that configuration 4 is set up for power mode.
After you're done, click the save button to download config 4 into your device.
So once we've got the configs set, we can move on to the preheat curve settings. In the preheat curve settings menu, we can see on the bottom that the curves adjusted will be for configuration 4. So we have S1 to S5, meaning to say 5 different types of preheat curve profiles can be assigned to configuration 4. For each of the curves throughout S1 to 5,remember to click save after you've configured them in order to upload it into your device.
That is in short how you configure your ML class.
There is however one thing I've yet to get clarified and that is under the configuration settings menu, there is actually an option to assign to config to either eco, soft, normal, powerful, powerful+, sxqi1~5 and the m1 m2 m3...m5.
I'll probably have to call up YiHi regarding that.
But for now, we know that for each configuration settings, there's up to 5 different preheat curves we can assign to it which makes that 25 diff preheat curves if you've got 5 diff config settings dialled in on your mod.
As for the erroneous display showing 9.99V, that happens when you're trying to vape in power mode on a wrongly setup config that's in TC mode. Tbh, I'm not too sure so I'll try it when i get home and see whrn that happens.
Another thing to note is that if a said configuration is set up for TC mode, it will only go into TC mode properly if you select JOULES on your sx mini ml menu. If you simply selected the config, the mod will get confused and display error messages.
Also, it seems that the tilt sensor gets activated whenever you go into confuguration selection.
I'm guessing these are some of the bugs YiHi needs to get sorted out in their next firmware update.