Try some different cables also unplug and re-plug the usb cable... 1st though you have got to get the driver installed correctly or it will not communicate. I had to unplug and replug the usb cable a couple times and kill and restart the software a few times till it recognized my device. Also the first cable I tried didn't seem to want to work so I tried a different one. Once you select the file after connected for me it was "SXmini_ML_Class-V2.102-English.SXI" Let it upgrade and DO NOT UNPLUG during this process. Wait until the progress meter reaches the far side and says complete. When you first run the software it will tell you if the firmware is out of date and mine was. After upgrade it won't say this anymore. See attached file for the upgraded firmware version after it's up to date. So far I'm loving this device... it's head and shoulders above any I've tried and I've tried a few! Even provari and their new sub ohm device are already beat before it's even available as far as I'm concerned I think... we'll see!
Note the video above is for the M version not the ML. The new software has different options but looks similar. Also I left the battery in while doing the firmware on the ML and it didn't make any difference at all... in fact I needed to select link mode which I don't see how you could do without the battery in it... anyhow after words I just unplugged and it restarted with new firmware intact.
Time to experiment with drawing some curves!!! This is legit I'm telling ya! Whole new dimension in customized vape action! Will update was we find some more info...