The serial interface caused me problems with my DCS because I have older units without USB connections. Finally got that right. Just rather have the upgrade modules rather than trying to upgrade it myself. I have been away from my trains for awhile and am still running v1.3. Thought about using the writeable module and trying to down load the upgrade. I had second thoughts about trying this because if I screwed up the download I wouldn't be able to use my Legacy. I also have a new LCS track but the power supply is back ordered. Even if I had it you can't use it without v 1.6. My hope here is Ro sends the 1.6 upgrade module. Otherwise I will bring my unit to York.
JG