New bug crap issue from Ledger with latest device updates is that Fido U2F app can't be installed on ledger Nano, and what is even worse is that update removes Fido U2F app itself! Multiple customers are reporting this issue on ledger reddit page, and developers are currently investigating this issue. Imagine you use Fido U2F on your ledger for some important log in, well you are screwed now, thanks to ledger dev team :/