TS401 does NOT require a registration of the device !
You only need an autel ID and you find the Software here
http://www.auteltech.com/autelcms/TPMS%20Diagnostic%20&%20Service%20Tool/403.jhtml
Use the PC software from the CD to install the update.
You have to install BOTH, the firmware AND the dtc library afterwards to get it working.