Unless Xteink have opened the firmware and I’m not caught the news, no. However, there are several open source firmwares but the most popular is CrossPoint, https://github.com/crosspoint-reader/crosspoint-reader
I never even tried the stock firmware. Been with CrossPoint since I got the device.
I mean, cars aren’t sentient so, this should be a given since they can’t have responsibility assigned to them. But here we are.