I wanted to try this. But hesitated.
Will i still be able to access my wallet, or does it overwrite the wallet software?
How did you install the firmware? When I went to the page on the nostr:npub1jg552aulj07skd6e7y2hu0vl5g8nl5jvfw8jhn6jpjk0vjd0waksvl6n8n website, it came up with a broken image link and the software wouldn’t download. https://jademiner.blockstream.com/upgrade/fwupgrade.html 
Discussion
It’s a firmware update so nothing changes in terms of your seed phrase or wallets. But they said it will reduce the device lifespan because it will be powered on much longer and uses more of its hardware resources.
Exactly. I like the ColdCard so just use the Jade to mine and keep track of blocks. 64 bucks is a great price pint too!