Are you saying there's a 3rd party firmware download for the Pico that might help SS temp control? If yes, link?
As for thread topic, I think it's a nice feature to have. No harm. If you don't need to upgrade, don't upgrade.
Yes there is, Artic Fox firmware upgrade for a lot of different mods, including the Pico. Fozzy71 has a good link to a thread which includes a link to the Arctic Fox site above. Good discussion in that thread about it.
Here you go -
Uniform firmware for many devices - ArcticFox + NFirmwareEditor
I personally didn't care for the SS TC vape after installing it and didn't feel like having to mess with the software/profiles to get it to vape similar to, or better than, what I am used to with the standard firmware.
I saw a youtube video of testing of a Pico with a thermocouple, he found it 50 deg F high with the SS setting on the Pico at around 400 degrees F if I remember correctly. He played around with his settings, and putting M1 to around 79 to 80 it was more accurate. I did my own testing and with a setting of M1 79 it was pretty good accuracy on the whole. using the SS Pico setting I may as well just been relying on Power control since it was so inaccurate. But thats not the problem I'm having now with TC of SS. Sometimes I set temp at 270 deg F and it vapes well, other times i have to set it at 400 to get the same vape, lol. Im using it on CLR coils which are likely not the best to use for TC, so plan to try my Kayfuns this weekend. I need stability

One thing that interests me about Artic Fox is from what I've read you can put in TFR values for resistance, so if it will do that on the Pico, I hope it will give better performance. Would like to hear from anyone who has used Arctic Fox TCR settings on a Pico. Another thing i hope to get is "live" resistance display which is one of its features. I don't plan to upgrade to AF until a second Pico I've ordered arrives.
I'm still new at this TC stuff but I read a lot haha.
Pico TC test on 316L SS using a thermocouple: