Couldn’t send off coldcard

I very rarely use my cold card as it is for cold storage mainly. Every 4 months or so I will get it out to keep myself familiar. I’m using airgapped and with Sparrow desktop. I presumably did everything correct. Entered pins, verified phrases, entered 2nd pin. Inserted SIM card into laptop to sign transaction. Couldn’t find the file to sign on sim. I deleted all the older files to make it easier. After multiple attempts, when I entered sign file on coldcard, it continually rebooted. I needed the transaction so I created a new wallet and imported the one protected by the coldcard. Super simple, even with passphrases and passwords. Actually feels really good that the process works so well. Though I’m curious on what is happening with coldcard and sparrow. I guess I could use it as an excuse to upgrade to the new cold card!