Excellent, Ordered here:
Mini VCI Diagnostic Tool Scanner for Toyota Lexus Scion TIS Techstream v10.30.29
For one quarter the cost of the dealer to update my TPMS I bought the tools to do it myself. THX great find!
I spent the extra $20 and sprang for the more expensive version with the newer firmware (Techstream v10.30.029, firmware v2.0.4) myself.
2015 Original Mini VCI Diagnostic Cable for Toyota Lexus TIS Techstream fw 2.0.4
The v1.4.1 firmware doesn't support the K-line protocol, which means it won't work with 2005 and older models (not that that matters for my 2013), and the v2 firmware is supposedly faster. In the end it probably won't matter but given the number of issues I've had in my life with firmware bugs I didn't want to mess with anything but the latest version.
Now, if I could just figure out how to jailbreak the version of QNX running the infotainment system...