I haven't opened my Ledger Nano S in ages. Last time I remember I had to access it through a browser.

Now it seems that I had to install Ledger Live-software to access the assets. However I can't do anything through this damn Live program.

The portfolio on the left-side-menu is grayed out.

When I try to add an account I get an error message:
Ledger device: invalid parameter received (0x6b00)

I googled that this error is probably caused by having an old firmware. My version is 1.3.1

However I'm not sure If I want to update my firmware because I can't remember where my recovery phrase is. And the software says that I should have it within reach, as  a precaution.

So what was the oldschool way to access the Nano S? Through a browser but how?