After this second message after clicking ok, the update was not successfully made, returning again to the beginning window in which I am requested to accept these terms of use and running again the installation/update:
To get rid of this and the update to be done, then in the folder where I installed the first time QSPICE I made another folder in which I put the update in this newly created folder. Is it normal to make an update this way? What am I doing wrong?