The recovery menu is a special menu for forcing upgrades (MCU or android system) when the unit is not working properly (like stuck on logo).  It is part of the recovery partition. Recovery mo...

when I click the reset the screen becomes blacker, and the click of the button is noticeable when you click it.

@Juan Perez  When you use the reset button....do the lights of the buttons blink in any moment? If you quick press the reset button, do you feel that the display shuts off? Do you feel you ...

yes yes, even though it's black you touch and you hear beeps from the app and you also see a clear black, the strange thing is that by resetting Recovery doesn't start, but well I can't do anything.

@Moreno Seri did you try by using the Bluetooth android settings instead of the Bluetooth app of the unit?.   I have the fsc-bw124 chipset and I tried the latest roms: Stock. Android 10. ...

The only way then is to get into recovery and reload the MCU.... Is is strange as all mcte mcus are similar....you could get some specific errors...but not a black screen. I don't know if there i...

@Al Ferro if you press over the sync button (the third button on the right column of buttons) your phone will ask for permission....then the unit can access the phones contacts

@Joris Vervuurt 

Good morning Iker. I've connected a screen via HDMI and nothing remains the same, it works but nothing is visible, the black screen. Thank you for your help and for trying to solve my problem. Gr...

@Quick Yuan This is a terrible way to treat your customers. I spent my hard earned money on your product with the faith that you would stick to your promises :(

How are phone contacts added to the phone book?

  @Sergio Peña As I pointed on previous posts...the unit can not be directly upgraded from android 10 to 11 as the ota files do not contain the recovery partition (that needs to be up...

I have update my max10 with the new versión max11 20220316 and now it does not work. What can i do ? . It stop at home screen 

Is there any chance to get BT fixed for PX6 MAX10 HD?

@Iker Gomez okay, so it is coming? :)

Thanks for the feedback. Sadly, I need to rip apart the dash, as I never installed the USB cable. Honestly the last thing I thought I'd ever need to do is upgrade the firmware on a brand new HU jus...

@Joris Vervuurt be patient....

Put the unit in recovery mode and update firmware from usb.

@Quick Yuan Would you be so kind to provide the download link for the MAX11 (PX6) .img file? I'm willing to take the risk to upgrade my MAX10 unit, even if there's a chance of bricking my unit...

good job and excellent explanation what is needed in the radio the MCU firmware. Excellent recommendation not to upgrade from MAX10 to MAX11 without a document on the procedure, I hope soon and in ...