I had no issues performing the upgrade from the downloaded file. I did not need to change the file extension.
The only thing with the update for me is that it only updated the TX file and left the MX file alone.
My question to others is did your MX portion change with the update?
- 2006 E90 330i TiAG retired.
- 2011.75 E90 M3 - BMW Performance Exhaust, BMW Performance Grills, Lux H8 V3, Reflector delete Euro style, Ceramic Tint 58%, Brembo 380mm BBK, V1 with custom multi-color display by www.Radar-Mirror.com - custom radar mount by www.performancepackage.com.