[Android Head-Units] cocoamba:
Hello dear friend,

Please tell me if and how you solved the following problem:

"Only glitch, when I change stations subwoofer reduces until I touch volume up or down, goes right to where it is set at."

I have the same situation. The subwoofer is connected properly but every time I start the car or once the car is running if I change the radio station / a song in youtube for example the subwoofer seems absent. Once I increase/decrease volume by 1 or more points the subwoofer comes back to life and keeps playing until I change the radio station/song/etc again. It it not a problem with the subwoofer itself nor the amplifier. Both worked just fine before this Ossuret S5 unit with an older Kunfine navi.

I found another annoying problem with the navigation sound (I use Waze). It's really hard to adjust the navigation sound. The first time I used it it really scared me because the radio was at volume 6 (quiet) and the first "in 100 m turn right" instruction that came was at maximum volume I think.

I have the navigation volume option in settings and I've set it to 6/12 and I also lowered the sound in Waze's settings to about 4/10. Now it's ok-ish...but the old Kunfine unit that I had before this one worked like charm at this chapter. It mixed the navigation sound with the background music smoothly (Ossuret kind of cuts the music suddenly, gives you road instructions and then also brings music back suddenly) and it had the same volume for radio, youtube, mp3, navigation etc. so there could be no option for example if you listen radio at volume 12 the navi yells at you at maximum level...

Does anybody know how we can syncronize the navigation volume with the main (radio etc.) volume so they work together?

What I can confirm so far for my Ossuret S5 (4gb ram 64 gb ssd, QF001 v.2.76 MCU QF03) is:

- the boot logo and boot animation can be changed (thanks to you all for the tutorial)

- the dsp works ok and has subwoofer gain, the factory settings include amplifier on/off, bluetooth on/off + double bluetooth on/off)

- 4g works perfectly (no screen issues so far = fingers crossed :) ), gps works perfectly (fast signal reception), radio works good with rds and great reception

- fan works good both on automatic (starts above 50 degrees C and stops below 50) and permanent on and is silent (I can barely hear it while it's spinning).

- the security code for factory settings is 8888. You can set the default volume (startup volume) and it's working.

- the buttons have led that can change colour (you can set them to match the rest of the interior lights of your car).

- android is reported to be 12 in cpu-z with API = 31 (probably fake but who cares...).

- wireless android auto works perfectly

- wifi works ok (it reaches significantly higher speeds compared to 4g lte network)

- steering wheel controls work correctly (my car dosen't have canbus and the steering wheel buttons work through resistance variations) once learned in the designated menu for this.

- mode button from steering wheel is kind of useless because when pushed it changes between radio, waze, music player etc. but the change is made by opening all these apps one by one. In the old Kunfine unit that I had when I pushed mode button on steering wheel a small pop-up appeared in the bottom screen that told me what mode I was in and I could change the mode by pushing multiple times without opening each app. For example if I was in radio I pushed mode 3 times (each push was shown on the screeen pop-up with explanation) and it switched to waze without opening 2 and 3 (1 was radio, 2 music player, 3 aux, and 4 waze = navigation).

- the radio app only has 6 slots (I can only save 6 radio stations).

Can somebody please be kind and explain to me (surely it has been already posted here before but I couldn't find a complete tutorial) how can somebody update the unit's firmware (as far as I understand so far the unit firmware and MCU firmware are 2 different things) and MCU firmware?

My questions regarding this are:

- who has to be updated first (the unit firmware or the mcu firmware, or togheter in the same time)

- what is the latest version and what is the changelog for it? My current firmware 2.76 is from 10.2023).

- describe the update procedure (what files are needed, what is the path for them on the USB memory, what is the method of update).

- is any kind of reset (and data loss) involved or necessary?

TIPS for those who use an external amplifier:

The cooling fan's speed control is achieved through the blue wire (normally remote wire for amplifier with 12v+ current on it) from the main small cord of wires = those who have 4g lte sim slot on them). For those who want to connect an external amplifier to this unit they need to know that the amplifier needs a +12V remote supply from the headunit to start (it's called a remote wire). Each headunit has 2 remote wires (both blue in colour, one placed on the main power harness (it's called antenna wire) and one on the main small cord of wires = those with the 4g slot on them). If you use the antenna wire the external amplifier will start and work normally but if you use the blue wire from main small cord with 4g slot on it the amplifier will only work if you have 12v on this wire. This happens only if you set the fan to work all the time. If you set the fan on auto (temperature controlled operation) when the cpu is under 50d C the fan control is off and the wire has 12v (amplifier starts and works) BUT if the cpu is over 50d C the fan control will kick in and it will lower the voltage on the blue wire from 12V to 5V (probably) for the fan to run and be silent) and your external amplifier will stop working.

Thank you,