yashsingh1/xdaforums huggingface dataset:
[Android Head-Units] ConorStanley:
They are cheaper than what I've already spent on this crap. I would but now that my dash is all cut out for this garbage, if I get something different, then I'll be buying a new dash and starting over and going down, yet another rabbit hole. I've done this before with another vehicle and forgot my woes, but also never really got it installed the way that I wanted. How about if I just figure out what I want in the head unit, then find the car that comes with that as a factory installed item and buy a whole support system for the stereo based on the stereo and nothing else?

I would end up with something like the Pontiac Aztec but it would have a *****in' stereo.
[Android Head-Units] ConorStanley:
I've de-pinned the entire sim card dongle, unplugged the main power connection with the vehicle off, plugged it back in and the screen is still black. I've put it all back together, unplugged the main power connection, plugged it back in, applied power and nothing, and I've repeated this three or four times. No display at all. It's strange, nothing changed from the normal usage other than that the day prior, I updated the firmware and MCU. I reconfigured everything and it was working fine. The next morning, no screen and no way that I can tell to recover. I think someone who wrote the firmware and MCU or sold me this unit that needed many updates to the software needs to send me a free unit. Let me see if I can get a refund from my January purchase.
[Android Head-Units] Raptor001:
Ok, I've got a Verizon sim card working in my head unit, but it doesn't receive a continuous signal and it's an extremely slow data connection even though it says LTE. Is there anything I can do to improve the connection and make the data speeds faster. I also can't seem to make any voice calls even though the sim card is from one of my phones. Is there an upgraded antenna that will help with speeds and data connections? I've tried inputting the APN verizon info through an app but it doesn't seem to save the data when I input it.
[Android Head-Units] lone_slayer:
Did you upgrade qf03 to qfo3 or qf01 to qf03 on the mcu?
[Android Head-Units] senzatiOn-:
Have try this?

Screen parameters file no need to flash.

So you can use on other resolution.. ( information from Russia site. )

*On your own risk.

https://xdaforums.com/t/recovery-ac...s-7862-headunits-no-fyt.4538107/post-88269661
[Android Head-Units] Kroko_xda:
You might get better LTE reception with your antenna position or shark fin one (outside the metal of your car).

From what I tested, you can't make phone calls with a SIM card in the head unit, only SMS.
[Android Head-Units] Kroko_xda:
That's half good news.

Maybe you should try and keep a stock version after full upgrade with no personal app/launcher or setting and see if it bugs as well.

If that works, you might find the culprit by doing reconfiguration slowly and keeping track of your modifications day after day (to be able to revert to a previous working version).
[Android Head-Units] Raptor001:
Oh. I thought you could also use the sim to make calls. Appears a sim car isn't really worth it then if you can Hotspot from phone.
[Android Head-Units] Kroko_xda:
My REX so far : I bought a Hizpo S4 (4GB / 32GB) in august 2023.

- system : QF001.20230508.153551_v4.19_01

- MCU : QF03.V01.01.20230315.011021

I didn't upgrade and don't plan to do it yet because it works good enough for me so far (only tested at home though).

I read throuht all 195 pages, it took me hours but was worth it I hope.

What I did so far :

- GPS tweak #787 even though it worked fine out of the box

- my 4G SIM card works inside the head unit but connection was slower than in WIFI from my phone (I will test with better antenna position but I don't think I will invest in a dedicated line just for my car)

- fan doesn't seem very loud (and I think that within my old car it will be inaudible)

- microphone tweak thanks to @Zebnastien 's tutorial #3275 (from an original hack by @blue_one if I recall correctly)

- SWC (steering wheel control) : 6 out of 8 buttons work (no CANBUS, resisitive lines connected to KEY1 & KEY2), 2 others have no resistance so the problem doesn't come from the HU

- Android Auto is useless, it's better to have the head unit with its own apps

- brightness will be a too low I guess (from what I read and my testing), if it's not bright enough, I will try shade-like protections
[Android Head-Units] Gyovany96:
I'm using SIM since I've got the HU without any problems. I got full 4G signal everywhere and the 4G antenna it's behind the HU.. I'd always chose an 4G SIM instead of phone Hotspot just because I don't want the phone battery to be drained just for car Internet (also the HU 4G SIM internet speed is very good, 1080p YouTube always everywhere) and also I want my HU fully independent from my phone!

You can use the SIM to make calls or SMS but into calls the mic wont work.
[Android Head-Units] Kroko_xda:
Fun fact (so to speak), in the beginning of this thread, people were complaining about the loud fan during phone calls.

When I tested at home, I noticed that the fan actually stops during a phone call.

It must have been added in a later firmware version.

I don't know if the supplier changed the fan though, here is the picture of the one I have (DD3510S12M).
[Android Head-Units] Kroko_xda:
The motherboard is different from the one of @Zebnastien
[Android Head-Units] Raptor001:
Who is your cell service provider in the HU?
[Android Head-Units] Gyovany96:
Orange Romania

Car: VW Passat CC
[Android Head-Units] Kroko_xda:
I might do like you if I can have a better reception.

At home I only got around 10Mbps (download speed) when I could get 2 or 3 times better from my smartphone's hotspot.

Maybe it will be better inside my car. I will try.

I did not find the "anti-theft / location tracker / history" app advertised on AliExpress Hizpo Europe's product's page

I have asked them 2 days ago and am waiting for an answer.

There are tons of apps to do that, I will try a few and I hope to find a good one with no subscription fee.

FindMyPhone (app from Google) doesn't work as I want: it can't find my offline HU "device" when I search from my dedicated HU Google account but it succeeds when I do it from my main Google account (?!?)

But in the end, I want to remove my main Google account from the HU device (for security reasons) so I have to find something else.
[Android Head-Units] Raptor001:
My slow verizon signal on the HU is using band 2 whereas my cell phone uses bands 13 and 66. Does anyone know all the bands that these HUs are compatible with in the USA?
[Android Head-Units] itiswitis:
The only verizon compatible bands for this HU is Band 2 and Band 5. Band 2 is most common and Band 5 is available in select regions in the US. Although verizon uses both bands for 4G/LTE, this HU only supports Band 2 at 2G/GSM. So you'll need to be in a verizon region where Band 5 is available for this HU to connect at 4G/LTE speed. Bands 13 and 66 are not supported by this HU.

Bands are here #3,794
[Android Head-Units] Raptor001:
Great info. Thanks. Do you know of any.other US cell carriers whose bands would be compatible with this HU at 4g LTE speeds?
[Android Head-Units] roxter22:
Hello, I did a hard reset on the radio using kor 225580000 and now I have a problem, the buttons on the radio do not work. I changed some option with a knob in the inserts. now my display does not respond to touch. Can you do a hard reset using the knobs on the radio? because that's the only thing that works.
[Android Head-Units] halloj:
That's strange, because I can call out using Google phone and the SIM provided in the HU.
[Android Head-Units] Hujeros:
I have claimed BT autoconnect and WiFi autoconnect as well. Also not fully worked CanBus - but i can live with it.

Seller send me link with update - BT autoconnect still not workind eve n if it turned on. Wifi autoconnect working now but takes some time to connect - about 20 sec. after switching my hotspot on.

https://jitu2fixgreenscreen.oss-eu-central-1.aliyuncs.com/update.zip

System version: QF001.20230819.183748_v2.68_02

MCU version: QF03.V01.06.20230802.002121
[Android Head-Units] jokex:
I've built in at my Honda a S8 for a few weeks.

System-Version QF001.20230819.183748 (update via seller)

Problems (beside the microphone):

Maps crashes sometimes after few minutes following route. Display gets dark and device doesn't react. Having switched of motor, after a while device is living again.

Using Android-auto Google maps and Sygic dont't switch to dark mode at night (Android-Auto set to automatic, Smartphone normally dark-mode)

Anyone with similar problems or a solution here?
[Android Head-Units] ThomasHedehus:
How to make my phone automatically connect to headunit via Bluetooth? 🙏🙏 Have to connect manually every time.. 👎
[Android Head-Units] itiswitis:
According to the info Hizpo sent me, the only compatible band for 4G, with the three major US carriers, is band 5. All three major US carriers use band 5 for 4G, but it depends on your region. The carrier's cell tower in your region may not use band 5 for 4G. You can check cell towers on cellmapper.net.

Networks, Bands and Frequencies - Swappa

US Mobile Networks, Bands and Frequencies for LTE, 5G, 4G, 3G and more.

swappa.com
[Android Head-Units] Hujeros:
Unfortunately must be connected manualy every time. Especially if multiple devices are paired...

My phone connected automatically once after restarting HU, but then it didn't happen again. Although I did a BT reset several times and also set up a regular BT scan. At least now my WiFi automatically connects to my hotspot...although it takes a bit longer. Looking forward to future system update ...

At the very least, the seller still communicates and doesn't just try to sell me off, he sends instructions and videos on how to set things up, etc.
[Android Head-Units] jokex:
I had no problems. After update it seems perhaps not as reliable. I am watching. But BT symbol now is not as good as before showing connection.
[Android Head-Units] YelloneK:
I have a problem, I have Hizpo S8 8GB. I bought a BM6 Bluetooth battery monitor on Aliexpress. Unfortunately, my radio cannot connect, even when I extended the cables from the battery to the interior of the cabin, it does not see the device. However, my smartphone sees and connects to BM6 normally. What's the problem?
[Android Head-Units] marioti:
This unit is the problem, it see only chosen bt devices but, no one know which
[Android Head-Units] YelloneK:
try factory reset
[Android Head-Units] YelloneK:
Do you mean BM6 Battery Monitor? My smartphone sees this device normally. I wonder why Hizpo S8 can't detect it since it detects OBD Elm327.

I wanted BM6 to work on Hizpo S8. This would be a very useful feature without using a smartphone.
[Android Head-Units] itiswitis:
The BT pairing and phone dialing apps are horrible on these HUs.

This may be a similar issue with BT OBD2 connectors. You can try deleting all BT pairing, reboot, then pair your BM6 only. You'll need to set the correct BT Pin.
[Android Head-Units] marioti:
no. i mean Hizpo unit. I have Vgate OBD, and once it see it, and another time it don't.
[Android Head-Units] YelloneK:
I will try again. As far as I remember, BM6 did not have a PIN. It seems that Hizpo does not see this device even when it is very close.
[Android Head-Units] roxter22:
Radio Hizpo s2 I need to reset from the recovery option. how to turn it on? The buttons on the radio do not work and the touch screen cannot be calibrated.
[Android Head-Units] marioti:
Try to plug the usb cable mouse
[Android Head-Units] tyaj50:
Quick question about reverse cam : i didn't tried to install it yet but I activated reverse cam in the settings, should my screen turns to reverse (with "No signal") when i engage reverse gear ? i'd like to know if my canbus detects it correctly
[Android Head-Units] Gyovany96:
If you don't have the camera installed, then yes, it will show no signal.
[Android Head-Units] tyaj50:
Yes but it should switch anyway ? if i engage reverse gear nothing changes on my screen
[Android Head-Units] Gyovany96:
Oh yes, if Reverse Cam is activated it should change to "No signal" screen.. If not I guess there's something wrong, maybe with canbus
[Android Head-Units] nuclear__:
I had the same problem . My car has can bus , however it looks that it doesn't understand reverse engagement. You have to connect the reverse lamp wire (+12v when reverse is set) to the reverse pin on the head unit. So you must apply a cable for this reason from the trunk to the headunit
[Android Head-Units] nuclear__:
I have s5 unit . Has anyone tried subwoofer rca output? Mine doesn't work. I dont know if it's faulty only on mine or its fake cable
[Android Head-Units] jokex:
Yes BT ...... It's a problem, if more than one BT-device ist near by. Connecting an ODB2-Dongle f.e. seems to work only, if the usually connected Smartphone is unreachable.
[Android Head-Units] MauriBixio:
The "old" QF01 MCU units have green MB PCB, QF03 (current new) with black PCB, at least from the looks of it...

With units native QF03 it seems they have only introduced worse issues, reading the feedback here... with the QF01"old" that I have (S8 8GB/128GB) everything works well, EXCEPT for the display which is really LITTLE - LITTLE bright, especially with direct sun you can barely see what is running below, I already talked about this.

Personally...but I would NOT buy these current Sx units anymore, with QF03 MCU...but opt for something else.
[Android Head-Units] MauriBixio:
Test if you can re-calibrate the touchscreen.

Keeps ALL 5 fingers pressed on the display for at least 5 seconds.

If this works, the screen to redo the touchscreen calibration should open.
[Android Head-Units] marioti:
Not quite. I bought mine on february, and it is black pcb, but qf001 mcu rev.

Qf03 came on somewhere in may
[Android Head-Units] MauriBixio:
The problems you write about (black screen etc.) others also have with nntive QF03, just read the previous posts...
[Android Head-Units] lone_slayer:
I have a QF03 never had a single issue with it. Have updated to latest firmware and have done 1 mcu update (1 more available not sure if I will install)
[Android Head-Units] MauriBixio:
Purchased mine in January 2023 by Hizpo, native QF01...green PCB.

In this case...PCB color green or black,the units with hardware\MB NATIVE QF03 I think are VERY problematic, QF01 native have much less problems.
[Android Head-Units] MauriBixio:
Of course, MANY problems also arise from poor writing of the latest firmware and MCUs released by developers.

My advice:

If you have the unit that works well, don't chase constantly new firmware and MCUs, leave the working one as it is.
[Android Head-Units] jokex:
@Zebnastien

what sort of tape did you use?
[Android Head-Units] marioti:
use any thin and elastic tape. it can be even packing tape. there is no special needs.

If you want some good, personally i recommend kapton tape
[Android Head-Units] jokex:
I 've opened device, but this cable is so small, very small for my thick fingers and old eyes. :rolleyes:

Therefore I stopped for now....
[Android Head-Units] Astralech:
I haven't been without a watchmaker's magnifying glass for years.
[Android Head-Units] ShockedWave:
Hello, I have a Hizpo S8 and I have the problem that my device mutes by itself. Sometimes the volume also changes or the screen scrolls without touching anything.

Has anyone had this before?
[Android Head-Units] FabiaSkodaRS:
I have my S8 connected to ALPINE SWE-815 by rca output and it is working fine.
[Android Head-Units] jokex:
Has anyone solved problem, that widgets disappear from launcher (Google Auto f.e.)?
[Android Head-Units] Hujeros:
So in the end, we worked out with the seller that the BT chip is a bit cheap and allows the connection of only one device at a time - be it an OBD or a phone.

Furthermore, autoconnect already works with my HU, because from my point of view the buttons are named illogically - when the button says "close" then autoconnect works...

It seeems that we are all Beta Testers 🙃
[Android Head-Units] Jeka1400:
Please take photos and videos of how it works for you. By default, you should not show anything at all, since there is no chip installed on the board that is responsible for this function. On new firmware, it is now possible to additionally connect the right camera, but it can only be launched manually from the application menu and there is no way to display it on the screen together with the rear one.
[Android Head-Units] MauriBixio:
With my S8 (native all QF01) I can have both BT the phone and the OBD interface paired and connected together, without problems, so the seller did not tell you the truth, because Chinese seller of these units, whether Hizpo or Ossuret, does not They know it thoroughly, as they are NOT the real producers but only sellers.

Hizpo (I know them) have technicians who answer questions in a generic way, without real effective knowledge of both SW and HW of what they sell.
[Android Head-Units] Hujeros:
OK, but "paired" is not the same as "connected". Coudly you please test if "Torque" app work if you have your phone connected ?
[Android Head-Units] itiswitis:
Are you able to keep BT enabled for both OBD and phone? I'm using 0614/0207 (native QF01), and I still need to allow Torque to connect first, then I can enable BT on my phone. Both BT devices work fine after that.
[Android Head-Units] Clyde72:
You should be able to select this in your phone's BT settings
[Android Head-Units] MauriBixio:
I know perfectly well the meaning of what I write!

I can use 3 different diagnostic test apps via BT for BMW cars, also code ECUs if desired, via BT with S8 unit, and at the same time have BT phone connected.

Torque is a generic app, which in any case works without problems together with BT phone and BT OBD, at least, I can make them work.

Maybe... (and here I admit that I have NOT tried) it is not possible to make a phone call and at the same time manage and use an app via BT OBD interface... but maybe it is possible... I'll try!

Edit:

For BT OBD interface I use Vgate Icar.
[Android Head-Units] MauriBixio:
Well:

I have phone and BT OBD interface paired for the first time (I use pin code 1234 and no 0000).

Once this is done, both phone and OBD ALWAYS remain enabled and opened, I don't have to do it every time.

To have the connection between e.g. Torque and OBD adpater (I don't use Torque but other apps) just run Torque and after a few seconds everything works.

With BMW car...with other brands\cars I don't know.

edit:

I enable BT in my phone before getting into the car, then I don't have to do anything else...
[Android Head-Units] paradoks55:
Hello everyone, I have two questions 1 what is the algorithm for downgrading the system with the two files and 2. how to drive Zlink/Zplus android auto I am currently using this software Hizpo S8 roko 706 8/128 thanks.
[Android Head-Units] marioti:
1. You do it same as upgrade, no matter which file first. You can also downgrade only software or only mcu

2. You have to pay to use zlink. Try carletter it'll do the same and it's free (factory > 8888 ok > and one of the last position on the list you just change from zlink to carletter)
[Android Head-Units] Lione2:
Pay for zlink ?? Ask seller he can activate for you. I tried to switch to carletter and it ask for activation. seller ask me qr code and activate it for me
[Android Head-Units] marioti:
Lucky you. For me ossuret said that I have to pay for it
[Android Head-Units] Lione2:
you should ask them to activate for free. Zlink is part of the product you buy...
[Android Head-Units] MauriBixio:
For those who purchased from Hizpo store:

they can DEFINITELY activate Zlink (if they want).

Show a picture of the QR code, and this must happen for FREE on their part.

IF they ask you money, they are dishonest...Zlink app is part of the purchase of the radio (but only if you previously had the Carletter app activated, as default).

With Ossuret: I don't know how they work...
[Android Head-Units] piticu2015:
I have a question for those using Android Auto Wireless. I owe an S2 unit. The annoyng thing is that after unit reboot (abouy 30 sec) it takes another 40-60 seconds to autolaunch Zlink and auto connect to the paired smartphone over wireless AA (regardless the smartphone used). It seems that Zlink is not launched right after the boot but delayed or this service is very very slow. Is this behavior normal ? I have noticed at a friend on an 2022 S8 unit that the AA auto lauching is starting right after the boot sequence is finished (uses Carletter the only option with the older unit). I didn't try Carletter because it requires a license I do not have for the moment and Zlink seems the default in 2023 units thus newer and theoretically better option. Is this normal behavior ? Is it any tweak for this ? It's a lot faster if after boot I press manually the Zlink icon than waiting auto connection.
[Android Head-Units] Raptor001:
Is there any advantage of using Android Auto or CarPlay on the Android HU if all apps you need are installed on HU and the HU has its own sim car with cell service?
[Android Head-Units] piticu2015:
Probably not but not all the units have 4G sim if the question was why I insist to use AA.
[Android Head-Units] Gyovany96:
In my opinion there's absolutely NO advantage to use AA/CarPlay if you have 4G SIM with good signal coverage. You only get hotter HU being moooore busy running AA/CarPlay wich will also runs slower and also draining your phone battery for no reason.

Later Edit: Also I see no advantage to use AA/CarPlay at all on Android HU, even with phone Hotspot is better if you don't have an 4G SIM or good coverage/speed!
[Android Head-Units] Raptor001:
Just a general question I have been meaning to ask as a new user and your discussion reminded me to ask to better u derstand if there was any benefit in its use.
[Android Head-Units] piticu2015:
It's arguable the load but in my opinion with AA the load should be more on phone the unit being used as a display only so lower specs units should perform faster with AA.
[Android Head-Units] MauriBixio:
AA only makes sense if you have an OEM multimedia system that is not based on Android. Conversely, with these units, it is of no use, all you need is a phone hotspot (or 4G SIM) and you can use the same apps directly, without AA .

Naturally my opinion, perhaps not shared by others.
[Android Head-Units] jokex:
I agree, but the (my) problem is, that I am missing certain widgets, especially Google Auto. Driving using maps without a route is not really usefull because of presentation in the form of overview. Sygic f.e. automtically changes view if it realizes you are driving.