It should be already on board...
Nokia Lumia 530 Specifications - Nokia
I think HERE servers are hickuping today. Earlier we had a question about super slow map downloads, then your issue and I tried just moments ago to open HERE Drive + to research a menu tree and had to reestablish my log in from scratch. HERE never went out on my laptop (Windows 8.1 App).
If you can't find HERE Drive + on your 530 and it won't download... Wait a bit and try again.
You may want to get SysApp Pusher and try via that App.
Sorry, I don't know anything about 6tag.