Chosen Solution
Ya intente el modo debug en bluetooth options, tb reseteando PRAM, si funcionaban pero después de un update (Sierra a Sierra High), ahora tengo Mojave y sigue igual English (translated by @ajcooke01): Unable to connect to Bluetooth Bluetooth worked but after I updated from Sierra to High Sierra it stopped working. I have installed Mojave and the problem still remains. I already tried the debug mode in Bluetooth options and resetting PRAM. Actualización (03/01/19) Ésta es la información de mi iMac, no se si requieras algún dato esencial, he seguido intentando con muchos tips en internet pero nada, ahora tengo Mojave recién. This is the information of my iMac, I do not know if you need some essential information, I have continued trying with many tips on the internet but nothing, now I have Mojave. iMac “Core i5” 2.8 21.5-Inch (Late 2015) Actualización (12/01/19) Thanks a lot, I hope can do it well with this guides!
Creo que solo tuvo mala suerte de que su placa AirPort muriera. Aquí está el reemplazo necesario iMac Intel 21.5" or 27" (Mid 2015-Late 2015) Airport/Bluetooth Board esta es la guía que deberá seguir iMac Intel 21.5" EMC 2889 AirPort/Bluetooth Card Replacement . También necesitará un kit de adhesivo de reemplazo y el cortador de pizza especial para abrir el sistema [linked product missing or disabled: IF173-005-1]. También te recomiendo que obtengas 2 juegos de Plastic Cards también. I think you were just unlucky that your AirPort board died. Here’s the needed replacement iMac Intel 21.5" or 27" (Mid 2015-Late 2015) Airport/Bluetooth Board and here’s the guide you’ll need to follow iMac Intel 21.5" EMC 2889 AirPort/Bluetooth Card Replacement. You will also need a replacement adhesive kit and the special pizza cutter to open the system [linked product missing or disabled: IF173-005-1]. I also recommend you get 2 sets of Plastic Cards as well.
