I have tried that but Unfortunately, even that has not succeeded, if you are referring to "1-Click Upgrade" module. They have released a new version v4.15, which isn't compatible with Prestasshop v1.6.0.8, and the old v4.14.2 is not working as the PS keeps on suggesting to upgrade the Module, and if I upgrade it I get an error that v4.15 isn't compatible with your current version of Prestashop.
I am stuck! can anybody help?