Reviving My Ledger Nano After 4-5 Years: How to Safely Update My Cold Wallet Firmware?

I’ve been out of the loop for the past 4-5 years and haven’t kept up with all the updates in the crypto community. Recently, I realized that I have some funds stored in my Ledger Nano cold wallets. However, my hardware wallets are running firmware versions from 3-4 years ago, and I vaguely remember there was an issue with Ledger updates back then.

Now, I’m planning to access some of my crypto holdings this year. Can anyone guide me on the best way to update the firmware on my Ledger Nano devices? I want to ensure security and compatibility while accessing my funds.

Thanks in advance for your help! ????