Istio upgrade to 1.6.14 from 1.5.5 with helm


We are currently on istio 1.5.5 installed with helm and planning to upgrade to 1.6.14 with helm as istio community started to continue to supporting helm based installations, however I don’t find any useful documentation because for 1.6.X istioctl was the prefered way for upgrades ( I know we are on very old version, this is due to umpteen approvals and nature of project).

Anyone managed to upgrade to 1.6.14 with helm if so please share experience.