+
+ If you have already downloaded/installed the MacOS WCH-IC CH340 ("CH341SER_MAC") drivers via the CH34x_Install_V1.5.pkg, you will have to Uninstall the kernel extension:
+
+
+ 1. Unplug your T-Echo
+ 2. Open the Terminal and run:
+ 3. sudo -rf /Library/Extensions/usbserial.kext
+ 4. Reboot
+
+
+