• HW Installation Support

  • Exploring the problem of popping sounds

Nestoranto You need to upgrade the MCU, please check the solution mentioned in the appeal

      VishBK After the MCU is upgraded, the AMP C cable releases voltage to the system after 5 seconds to allow the CANBUS junction box to operate.
      If PIN 9 controls sound. Then it should take effect when the AMP C cable is plugged in.

          dudu-lai I think it would be easier having the software workaround with the AMP volume being set to 0 then reset when booted.

              VishBK The software cannot do this. It has been verified by engineers that the Toyota AMP does not accept volume commands, only plus or minus commands.

                  dudu-lai If you can get the current volume, couldn't it just do a minus until reaching 0 then plus until the previous volume?

                      VishBK No, the AMP volume is slow to ramp up and down.

                        Maybe it also would be great if the amp power would be turned off at reboot.
                        Press reboot, amp power 0, reboot, 5 seconds delay, rebooted.

                        dudu-lai Ok, I updated the MCU. The click only appears when restarting dudu. Thx.

                            Nestoranto Is the problem solved?

                                dudu-lai Yes, thank you. The click remains only when restarting the radio, but I understand that you will fix it in the future.

                                  dudu-lai Nope there is no amplifier volume control there, what you can do is to change the general volume level which is the same volume level you are modifying with the steering wheel volume buttons here is what you can modify under the car audio state.

                                  I have also tested upgrading the OS with factory default on settings to 3.6 beta 1, 2, 3 and there was no change on this behavior the speakers start crackling when you hit level 7 and above so if you dont want your speakers to sound like crap you have to listen to music low, which is pointless if you are driving on the highway the road noise makes you increase the volume then the crackling starts, really a shame the integration is not there at least with the current canbus , option b you lower the overall power output via the dudu car sound advance area but then your music sounds tiny there is no presence to the sound , basically you turn dts off and lower the power output, dont use any of the sound profiles, and this would avoid this , but at this point you are better off using the starlink oem unit. which is what @Bradha333 was pointing out.

                                      dudu-lai After trying again to connect the AMP C cable to PIN 9, the sound works and I can hear a longer delay before the amplifier kicks on. (Anything above level 40 on the amplifier volume white noise can be heard from the speakers). However, the popping sound is still heard if the device wakes up from a shutdown (like setting the shutdown instead of sleep option in start settings).

                                          VishBK You need to check the MCU version in the version information.

                                              dudu-lai MCU version: 2024.01.24 17:12:03 DUDUAUTO_53_L7870_N32P48F64_3G_E60_V:1.0

                                                  VishBK Have you not upgraded your MCU?
                                                  The version after successful upgrade should be: 2025.03.0715:53:15 DUDUAUTO_53_L7870_N32P48F64_E60_V:1.0

                                                    What are the steps to update? I selected the file in OTA Update->Offline MCU Update

                                                      VishBK The first post in the thread had a link attached to it, I thought you knew that, sorry
                                                      Extract the program to the root directory of the USB flash drive, plug it into the USB port of the radio and upgrade it automatically
                                                      https://drive.google.com/drive/folders/1QHfKsoY7tsgg4Bls8ezOjKWCTBwZ5NNy?usp=sharing

                                                          dudu-lai I did that but there is an update error: fork lsecxxxxupdate error!

                                                              VishBK Did you download DUDU7 MCU?
                                                              Please format the USB flash drive and try to download it again, and take a picture of the files in the USB flash drive for me to confirm.