One button upgrade in pallette?

Sorry to unearth this topic but it is related to the last "share your project" i've posted :

Is there a solution to run the

bash <(curl -sL https://raw.githubusercontent.com/node-red/linux-installers/master/deb/update-nodejs-and-nodered)

From NR to update?
With an EXEC node, I tried "update-nodejs-and-nodered" and error 127 is displayed (invalid command)

I had heard that NR had to stop to update itself. This causes the script to stop, which updates it. Is this still the case now with v1.1.2? If yes, we have no solution to update NR directly from NR?