Can’t install the pro theme .

Hello , can please some one give me a help with upgrading this catch wheels the to pro. I have buyed the pro pack but as I saw in the instalation guide ,I can't find the update button on wordpress. For updates directly from your WordPress Dashboard: For updates directly from your WordPress Dashboard: Login to your WordPress Dashboard Go to "Appearance => About Theme => License" I don't have this option About Theme .... Thank you for your time