One of our fellow racers posted here the instructions for it in English.
I was wise enough to copy paste to a document on my PC
With my (infinite) appreciation to that person here they are:
Hold the SET button down (while turning on the speedo) until the RED LED turns on and the GREEN LED flashes 3 times. (make sure you release it before it's done flashing.)
You are now in programing mode. (If you don't press anything, the GREEN LED will flash 3 times and enter back into normal driving mode.) Anyways, once in this programing mode, Press the SET button 1~4 times (Depending which program you want to change.) Make sure you press it so that the RED LED flashes to confirm each input. (example: to get to Program 3, Press the SET button, wait for the red flash, press it again, wait for the red flash, press it again, wait for the red flash. That's it.
Now wait for the GREEN LED to flash 3 times. And then wait again for the GREEN LED to flash 3 more times with the RED LED on. Once they stop and are out, press the SET button to the value the you need. Again, wait for the RED LED to come on and off for each value. When you are done, leave it alone and the speedo will flash the GREEN LED 3 times and return to driving mode (RED LED on).
Thats it!! Drive! You have to turn off the speedo if you want to program something else. In other words, you can only program one thing at a time. Hope this helps. I know the German instructions have a bad translation. But once done (correctly) it's very easy to do! Enjoy! It's an awesome ESC!!