it's not only that; this story is also about using a more robust checksumming so that you can know whether the transmission was actually successful. But if lat

it's not only that; this story is also about using a more robust checksumming so that you can know whether the transmission was actually successful. But if latency is what you care about the checksumming has to be done on the receiving end, and that's the device you're actually flashing. So, the trick is to upload a short program on the target device and let it take over the flashing process. This way you can go beyond what's provided by the default flashing protocol shipped on the device's ROM.