Configurar Shimano DI2 electrónico en sus modos -manual, automático y semiautomático-

I'll explain the 3 types of shifting available on the Ultegra and Duraace DI2. To do this, we'll have to press the control unit twice, and each time we do so, it will show a different shifting mode: 1 green and red light. Manual mode. We shift electronically but manually. In other words, as usual. 2 red and green light flashes. Semi-automatic shifting mode (Semi-Synchro Shift). That is, when we engage or disengage the chainring, two sprockets on the cassette will automatically shift up or down (this can be customized; I'll explain). 3 red and green light flashes. Automatic mode (Synchro Shift). That is, we pedal and shift the sprockets on the cassette, and when the system sees that the chain is too crossed, it will decide to disengage or disengage the chainring and, in turn, shift up or down two sprockets. I hope this helps!