update question

Hi,

In order to update theme correctly, you have to make sure that you do not customize / change / add more your own css code into the Main theme yet.
If that, just go ahead to update theme by Activating the default theme -> Deleting Techone theme -> uploading the new update version package of theme then activate again

In case you have some customization on Main theme, you should backup all your own changing. If not, all will be lost. After doing backup, then update theme and add back your backup files.

Hope that it is useful for you
Regards,
Yame