Junsun v1 pro mtk8259 android head unit all saved data gets reset after reboot.

[TorstenH]

Below you can see the socket of the head unit and it may work after swapping the wires which are connected to pins 15 and 8.

It may be a good idea to use a multimeter to check if swapping is required. Or you could remove the head unit from car and use an power supply at home to check if memory problem still there after correct wiring. But for this you need a 12V power source.

 

[t33t]

Below you can see the socket of the head unit and it may work after swapping the wires which are connected to pins 15 and 8.

It may be a good idea to use a multimeter to check if swapping is required. Or you could remove the head unit from car and use an power supply at home to check if memory problem still there after correct wiring. But for this you need a 12V power source.


View attachment 5918563

Junsun V1 pro won't save settings
So far i've tried:
Adding USB drive as Android space, also as travel media for music
Reset
Update to v61
Manual save to USB drive via 5555 code
Manual save to SD does not work
After restart head unit loses radio stations, equalizer settings

edit
Pins tested with multimeter, all as on drawing
Also tried erase all data

So far, no success with radio stations memory and dsp settings

 

[TorstenH]

Junsun V1 pro won't save settings
So far i've tried:
Adding USB drive as Android space, also as travel media for music
Reset
Update to v61
Manual save to USB drive via 5555 code
Manual save to SD does not work
After restart head unit loses radio stations, equalizer settings

edit
Pins tested with multimeter, all as on drawing
Also tried erase all data

So far, no success with radio stations memory and dsp settings

Du you have a 12v power supply at home so you can test in a "laboratory environment"?

 

[t33t]

I could find something, depending how powerful it should be? Also what cables to i need to use? Black and yellow(ones with thicker pins)? Radio stations and dsp setings are gone after reboot even when car is running.

 

[TorstenH]

I could find something, depending how powerful it should be? Also what cables to i need to use? Black and yellow(ones with thicker pins)? Radio stations and dsp setings are gone after reboot even when car is running.

I think 2A should be enough because we don't want to play music on high volume or do performance hungry stuff.

Finally we need to connect the head unit this way:

This would allow to simulate ignition on/off by (dis)connecting the ACC wire. I tried to paint a switch on the ACC wire.



Maybe it's enough to have such crocodile clamps

and connect them to the Junsun harness where usually your cars OEM harness gets connected to. At least that was possibly as I tried that.

 

[t33t]

I found the probleem. Solution is partial. After removing canbus module, and reinstalling it, I can save settings for little time. After reboot everything is saved. After that, radio and dsp have latest settings. Further settings and change arent saved.

 

[TorstenH]

I found the probleem. Solution is partial. After removing canbus module, and reinstalling it, I can save settings for little time. After reboot everything is saved. After that, radio and dsp have latest settings. Further settings and change arent saved.

Is B+ pin of the head unit connected to CAN box or directly to the harness of the car?

 

[t33t]

Is B+ pin of the head unit connected to CAN box or directly to the harness of the car?

Canbus and headunit are connected via split B+ cable.
Little update:
Adding USB drive as Android space, also as travel media for music
Reset
Update to v61
Manual save to USB drive via 5555 code
Manual save to SD does not work
After restart head unit loses radio stations, equalizer settings
Removing USB, restarting
Erase all data

No success

Car is Peugeot 207, Junsun V1 Pro with 64GB of storage and 4GB of RAM
What helped
Removing temporaly canbus, reconnecting it. Headunit saved for a while.
What helped for now, setting up canbus again. Tried different codes, one was Peugeot 206/207 hatchback. With that one did not work car trip computer and any of the buttons(cars). After setting back code 127, buttons worked, trip computer also works. Radio and EQ seems to keep settings after restart.

Hope it stays that way and maybe my experience will help someone with similar problem.

 

[franspainV1]

Así que tengo noticias.
Conecté la memoria USB y la opción de uso de radio como almacenamiento interno y luego, después de configurar todo el audio eq toda mi configuración en el menú 8888, hice clic en exportar a usb o algo así como esa opción, y parece estar recordando hasta ahora.
PERO
Ocurrió otro problema, antes del truco del pendrive intenté figgle aroud en las opciones de configuración y creo que rompí la opción de apagado más o menos, ya que ayer la batería de mi coche se agotó.
Y puedo escuchar claramente a los ventiladores trabajando después de que el motor del automóvil se apague y de alguna manera funcione en segundo plano.
El modo de suspensión normal en la configuración se establece en 0 minutos, así que supongo que rompí algunas configuraciones en la opción oculta 8888

Por ahora, estoy cargando mi batería mañana, intentaré publicar algunas tomas / videos de la interfaz de usuario y las opciones de mi unidad

bien. Instale un 6/128 junsun v1 pro esta semana. Arranque siempre en modo de suspensión, ¿agotará la batería del vehículo? ¿Dónde puedo ver los minutos configurados en modo de suspensión? ¿Puedo ponerlo en reposo después de 1 hora? Saludos y gracias. Lo siento por mi inglés, uso google translater