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I can see on device manager that something changes. When I plug the teensy 4.1 in, I can see Teensyduino RawHID appear, and when I click on the program button, it changes to unknown.

I'm trying to program a Teensy 4.1 . I've tried to upload a test program: #include <Arduino.h> void setup() { pinMode(LED_BUILTIN, OUTPUT); Serial.begin(9600); } void loop() { digitalWrite(LED_BUILTIN, HIGH); Serial.println("LED is ON"); delay(1000)...