I haven’t flashed my T480s yet, as it’s my daily, and I’m waiting for a couple versions to bring additional functionality. anyhow, I was hesitant for the longest time about dicking around with this sorta activity, on the basis that if it’s not software flashable/moddable, I’m out. but the total cost of the hardware (raspberry pico, SOIC clamp, some wires) is under $10 in total and the procedure couldn’t be any more straightforward; also it has a multitude of uses after you’re done. my point, if you were similarly hesitant, take another look, it’s easy and this post is very detailed.