cómo actualizar el tema de 8.0 a 81 sin error? via ftp? y como hacerlo?

Hello andrecarbajal,

First of all, to be safe, you should make a full backup to your database, and then, download the latest theme version from Theme Forest and install the theme via FTP way because this is the surest theme method, according to our documentation here -> https://forum.tagdiv.com/install-via-ftp/

Hope this helps!

Thanks for the message!