There is a custom FW for the chip in the wild and it includes a toolbox to update its firmware.
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LINKS

Toolbox : https://bit.ly/34SZCPd

FW : https://bit.ly/34TkF4n
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MUSIC
https://elements.envato.com/technology-J3QGJP3
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HOW TO CONTACT ME

https://linktr.ee/sthetixofficial

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DONATION

https://www.buymeacoffee.com/sthetixofficial

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CREDIT

to the team that made the firmware and toolbox

#sthetix #sthetixofficial

source

https://www.youtube.com/watch?v=Z-aSK7ECjq8