How to edit footer copyright in Prestashop 1.6

How to edit the footer of Prestashop 1.6 and the text "© 2014 Ecommerce software by PrestaShop™"?

That will be showed in the next steps:

At first, you need to log into your back office and open Localization > Translations

For "Type of translation" choose "Installed modules translations". Select the theme which you use and the desired language. Click on the button "Modify".

Search for this string: "[1]Ecommerce software by %s[/1]", which will be under the section  "blockcms".

Good! Now you changed the text, but it's still linked to official Prestashop page and using the Prestashop title.

To continue, you will have to open an FTP client (for example Filezilla for Windows, Transmit for Mac)

Connect to your FTP and find this file:
/themes/YOUR_THEME/modules/blockcms/blockcms.tpl

Scroll down and you will find this string:

<li class="last_item">{l s='[1]Ecommerce software by %s[/1]' mod='blockcms' sprintf=['PrestaShop™'] tags=['<a class="_blank" href="http://www.prestashop.com">']}</li>

Here, keep the "'[1]Ecommerce software by %s[/1]" untouched, because you already changed it in the back office. What you need to change here is the "PrestaShop™" and the link "http://www.prestashop.com". Therefore the result may look like:

<li class="last_item">{l s='[1]Ecommerce software by %s[/1]' mod='blockcms' sprintf=['Your-eshop™'] tags=['<a class="_blank" href="http://www.your-eshop.com">']}</li>

Save the changes on your ftp by replacing the original blockcms.tpl and check the result on your website.