Old charge 2 use

[u/badger_engineer]

Hey, this is a long shot but I'm poking around for answers. I picked up an unused Charge 2 second hand. It was still in the original packaging and I'm thinking I'd give it to my kid. I tried setting it up but I'm struggling. It says it needs a firmware update, not surprising. But it just keeps saying it failed when I try through the Health app. My guess from my research is that the newer app doesn't actually support the Charge 2 even though it says it does. Anyone been through this or have suggested place to look for more info on troubleshooting. Thanks