Take an sd card inset into the slot in the bottom of your radio goto menu, system setup, system settings, next, next, at the serial number screen export. Serial number will be written to sd card
Insert sd card into computer at spektrum website create an account and it will ask for SD, there is an option to upload serial number. After finished, log in and download updated to sd. Check if the update file is to be in a folder and not just sitting in the sd drive by itself, that is the only thing that is not obvious. That may be fixed when it is updated, who knows?
Reinsert into radio menu, system setup, transfer sd card, option: update firmware, select DX6 Update. Orange bars will flash for a long time.
Voices can be updated the same way.
Setting up a new account is the only pain in the neck. I hate passwords!
There is also an option to download dozens of aircraft model setups. E-flight and blade products are listed. Will be surprised if the nano is not there. I share files at the field. Very cool to load the model settings, then bind and have everything set up. Always verify during preflight what the controls are doing because there may be a rate switch active.
**To clarify above post, takes 15 min for radio to read sd, write to radio, then install update.
Justin