1. What happens if your internet goes out when you doing a firmware update? Any chance it bricks? Or does it just not go through and you can do it again? Anyone here would even try upgrading firmware if their internet isn't stable?
Nothing will happen. It doesn't update until the entire firmware has been downloaded and verified. If your internet dies during the download, it will just abort and you'll be able to try again.
2. I have done previous firmware updates before and recall one of the earlier ones I did, i had that bootlogger mcu issue a while back. But do things like this still happen with the firmware updates now?
Not unless people are updating older firmwares when this was an issue.
3. I recall they do ask you to confirm the identifier number is correct during this process. Has there ever been a case of where that number wasn't displaying the same number on your nano ledger screen?
No
4. What happens when you update much older firmware like 1.5 all the way to firmware 2.0? Does it just by pass 1.6.1? Does it increase chances of a an issue in the update?
Pass...
5. I'm curious but anyone here still using old firmware and by that i mean using firmware before 1.6.1? I know people say you should always update to the new firmware when its available but anyone here still using old firmware but have no issues using it with ledger live? I assume if you continue to use old firmware and continue to use ledger live... you might have synchronizing issues or things like that until you do next firmware?
Don't think you can... I vaguely recall that Ledger Live only works with newer firmwares (ie. v1.6.1 etc) and required that you update before using it.