My nano currently has outdated FW since I never touch it. Is it safe from the recover/shard thing in 2.2? Are there any downsides to leaving 2.1 FW installed forever? Not looking for 'just switch to X / airgap bro' answers. I've already swapped most of my stuff to electrum. Just curious if it's a viable option to never update for those who can't or won't switch from ledger.