Good news folks.. I managed to get the latest version of Techstream up and running on my windows 10 machine. Techstream ver 16.20.023 - I tested it working with my Tundra. I am 99.999% sure it will run on the older LC. I'll try to gather up some details and post how to get it up and running.
Edit - to answer
@planomateo below.
- I am seeing that the new version works. The only minor issue during initial screen where it ask what model. You first have to select UJZ-100 instead of LC/LX. But I dont think its a problem at all
- Used the same old mini VCI cable firmware 1.41 (I believe some of the newer changes will need the 2.x firmware cable - but likely not needed for LC/LX 100's changes)
- If you are happy with 12.xx.xx Techstream you can continue using it. But I just wanted to get the latest version b/c I have newer Toyota's
- One main thing is to get the Mini VCI cable to be installed on Window 10 64 bit. This is the main thing you have to get working (which is easy btw). Once you do this successfully then installing Techstream 16.2x.xxx is easy.