Ok, I can confirm this works. Thanks @julian.
SOLVED nodebb + persona theme - cant upgrade through panel
When i try to upgrade to last version of persona theme, i get this error "appears to be a git repo or a submodule" and didn't upgrade.
Basically means you installed this theme by doing
git clone <url>instead of
npm install. So either delete the folder and npm install if you'd like to manage it from ACP from now on, or git pull in the theme directory
ya.. ok.. i did installed using git clone but i manage to update it through panel.. hm.. guess not anymore.. xD