I'm having the same issue. I'm trying to update a 1.6.1.4 of PrestaShop but the 1 Click Upgrade module gives me a red X with the "The 1-click upgrade module is up-to-date (your current version is v4.14.2)". What's weird is that it's saying it's up to date but still gives me a Red X.
I've tried
1. Deleting and reinstalling the module
2. Turned off cache and cleared cache
3. Permissions are set to 777 on all files and folders
Any suggestions?