Buying a used T480 - Thunderbolt issues: Need advice

Hey all,

I’m considering buying a used ThinkPad T480 and want to make sure I’m not walking into Thunderbolt issues. I’ve heard these can be a problem on this model, so I’d appreciate some guidance on a few things:

1.How can I tell if the Thunderbolt issue has already occurred? Are there signs I should look for during inspection, or any quick tests I can run?

2.How do I check if the latest Thunderbolt firmware is installed? What’s the best way to verify the firmware version?

3.If the firmware isn’t up to date, is it safe to buy and install the update? Has anyone had problems with the firmware update process on a used T480?

4.How do I install the firmware update? If I need to update, I’d appreciate a quick step-by-step.

Thanks for any advice! Just want to make sure everything works smoothly, especially since I’ll rely on the Thunderbolt port for peripherals.