Hi all
I bought a second hand car stereo 8.1 reference 8227l Chinese without name ... see pics
I have several problems : impossible to find how to go into recovery and therefore impossible to root for now ... (I tested all possibilities: reset / power and all keys)
But more serious: impossible to have access to settings / accessibilities necessary for google maps which bug in navigation, or install a program like "velociraptor" to have the speed in real time
Cannot find out how to do a hard reset too : rolleyes: there is a reset / settings function but it does not do anything ... reboot everything stays in place
Thank you for help and good day
Usually reboot and volume +
Thanks for help but not possible with vol+. I'm not sure buttons are enabled during boot they're lightning only after android is running.
Android Head Unit 8227
Good day to everyone, ive also got a head unit 8227L from ebay, its a 7" android 8 head unit, none if the physical buttons do anything, they died after i changed the boot logo, i have tried putting it back to the original one but no help, on top of that, the touch screen dosent work in the cold, and here in the great white north, its 30 degrees below freezing for months, Ive tried everything to get them working again but no luck. I have to use a USB mouse to even do simple things like change volume, so needless to say, its a useless radio until i can get the buttons working again. Any help be greatly appreciated. Ebay just refunded me for the radio they quit trying to help, all they said was to just press the reset button, which dosent help
ripster54 said:
Good day to everyone, ive also got a head unit 8227L from ebay, its a 7" android 8 head unit, none if the physical buttons do anything, they died after i changed the boot logo, i have tried putting it back to the original one but no help, on top of that, the touch screen dosent work in the cold, and here in the great white north, its 30 degrees below freezing for months, Ive tried everything to get them working again but no luck. I have to use a USB mouse to even do simple things like change volume, so needless to say, its a useless radio until i can get the buttons working again. Any help be greatly appreciated. Ebay just refunded me for the radio they quit trying to help, all they said was to just press the reset button, which dosent help
Click to expand...
Click to collapse
I do not have an 8227 unit but try to help here.
With my px3/5 and T8 units, I can remap physical buttons using either a built-in app, or Settings/Car Settings menu. You may try to find out available options on your unit.
There is a Russian forum for 8227 units and you may use google translation to see its contents: https://4pda.ru/forum/index.php?showtopic=930058 .
Thank you for your response, the touch screen works when the truck gets warm, and only when it gets warm, says on ebay listing that it only works to -10 C, and well it will be awhile for that to happen here, the real problem is the no buttons work, i went to that site you provided and google did a great job translating it, but unfourtnley didnt help my problem, also the picture provided looks different then mine, im not sure how to add photos so i cant even show you what mine looks like, but ebay item 273656041408 thats the one i have
I have an 8227 device but its a hizpo not the same as yours so I dont know if you have the same options. But on mine, when you go into the about device in settings there is a gear icon you can click on which the code 8888 works so you can access deeper settings. One of which is the buttons on the front.
yes, ive tried that option, i can key into the key learn option, but it wont program any of the keys, what i dont understand is, how would changing the boot logo affect any of the keys, it is the 8888 code as you said to get to the other menu page, there is however a slider bar at the bottom of the key study option, has Chinese writing before it, i can slide it from 0-55, not sure what it does or if thats my problem
defective gps module ?
Hi everyone.
I recently bought an 8227L chinese 8.1.0 android car head unit. Everything works well, except the GPS: it can't find any sattelites. The connection of antenna is properly made, I tried to put it in different locations, even outside of my car, but no sattelite found.
Is there any setting I can change (e.g. factory settings or so)? Maybe the GPS chip is defective ? How can I get into that ?
Thanks.
hi there and welcome here, possibly you plugged GPS ant into wrong spot, i know on mine the radio and gps ant look very similar, tho im not sure if thats even possible, it is normal for the radio to take up to 5-10 min for the first calibration. You may be correct on a defective gps antenna, if your antenna has a clear line of sight and its been on for 10-15 min, if its still not finding any satellites id go with a bad antenna, but im sure theres many more people here with much more experience then myself, hopefully someone else has better suggestions
ripster54 said:
Good day to everyone, ive also got a head unit 8227L from ebay, its a 7" android 8 head unit, none if the physical buttons do anything, they died after i changed the boot logo, i have tried putting it back to the original one but no help, on top of that, the touch screen dosent work in the cold, and here in the great white north, its 30 degrees below freezing for months, Ive tried everything to get them working again but no luck. I have to use a USB mouse to even do simple things like change volume, so needless to say, its a useless radio until i can get the buttons working again. Any help be greatly appreciated. Ebay just refunded me for the radio they quit trying to help, all they said was to just press the reset button, which dosent help
Click to expand...
Click to collapse
Lucky to get a full refund. lol. Go to Car Settings, Factory Settings, enter password 8888, go to Physical button study and have fun. Remember that some buttons have multiple features like the power button is power and mute.
Btw, it is very hard to find info on these units. Weird since they are awesome for the price.
ric69 said:
Hi all
I bought a second hand car stereo 8.1 reference 8227l Chinese without name ... see pics
I have several problems : impossible to find how to go into recovery and therefore impossible to root for now ... (I tested all possibilities: reset / power and all keys)
But more serious: impossible to have access to settings / accessibilities necessary for google maps which bug in navigation, or install a program like "velociraptor" to have the speed in real time
Cannot find out how to do a hard reset too : rolleyes: there is a reset / settings function but it does not do anything ... reboot everything stays in place
Thank you for help and good day
Click to expand...
Click to collapse
Dear, I found this procedure to root: https://4pda.ru/forum/index.php?showtopic=930058&st=340#entry82160226 .
I can't download the attachment cause I can't login due to Russian.
Did you try this procedure?
Tks.
Hi I cant login to 4pda too, and I doubt this process cause I can't even connect to my laptop (not recognise / no sound with usb)
ric69 said:
Hi I cant login to 4pda too, and I doubt this process cause I can't even connect to my laptop (not recognise / no sound with usb)
Click to expand...
Click to collapse
I had that problem with USB and my laptop... I had to enable it in the 8888 settings. I dont remember the actual name of the setting atm but check my stereo later and let you know.
Try and post result please.
andsoitiswritten said:
I had that problem with USB and my laptop... I had to enable it in the 8888 settings. I dont remember the actual name of the setting atm but check my stereo later and let you know.
Click to expand...
Click to collapse
Oh yes you are absolutely right, in settings/ others/ enable USB2 debug and save/reboot at boot I can see a line at the top (don't remember exactly ... "waiting usb" or something like that.
Now I'm really afraid to try root as I don't have any backup and it's a second hand radio :silly:
Did you try rooting
Hello yes but flashtool.exe is not working on my laptop (I tried with Windows 7 pro)
Ok I gave a new try to Mekede root... so flashtool.exe must be at c:\ on the computer to work but when I put AC8227_android_scatter nothing happened, all is grey, 0kb/s. I tried to connect USB on unit but impossible to recognise (I tried to enable debug USB in dev settings) drive me crazy...
Edit : I totally bricked by flashing MekedeRoot via sd card. I opened unit and saw it's MEDIATEK MT6323LGA 1831AGAH CTG39W03
I'm searching drivers for Windows to connect USB but no chance for now
It looks like I may have come to the right place.I have one of these units from Ebay. It reboots every time power (ACC) is applied and again when you start the engine. I went back to the Chinese vendor and they suggested I do a hard reset. Now the left hand side of the touch screen X0-X200 doesn't work. Nor does any of the soft buttons on the left hand side.
I've gone into the factory settings screen and found the touch related functions; Touch Settings, Touch Test, Physical Buttons Study and debug touch.
The Factory Setting App looks similar to this guide on the Joying website dubdubdubdot joyingauto.com/blog/category/head-unit-problems-solved (I cant post links yet) particularly the Physical Buttons Study and step 3 where the X/Y deltas can be set. However, when I select 'config' in the unit I get a config file not found error.
So would it be possible for somebody to post a copy here of that file for me?
Also in the 8227L Factory settings Menu is the "export Config" option. That creates a file metazone.bin on the USB drive. Could I get a copy of that from a working system please? Mine is 1Mb but checking with GHEX it is pretty empty (0x00's). Also any clues on where it is located or how to import the data?
In /storage/emulated/0 is a file calibration.ini it has zero bytes does that have anything to do with it? A copy of that would be appreciated as well please?
Then there is the reboot problem. I have another, different, Android 7 unit in another vehicle it comes on and stays on immediately power is applied.
I have found this file auto_shutdown.sh in the root folder
I hope you can help please? I'm having trouble with the vendor etc to get any resolution or refund
Hello, I installed my new Px6 octacore radio and it's stuck on the Android boot logo. The only thing that works is the reverse camera then back to the boot logo.
The reverse camera always work 100% when I put the car in reverse but when I take off the reverse it always goes back to the boot logo.
I tried the reset button but the screen just turns black, then the welcome screen appears the android logo appears again but it gets stuck on the loop every time.
Here is the video of the radio in action or rather inaction:
youtu.be/0S2rdx_QYVM
the reverse camera works without android, so it works always despite of what the status of android is.
it seems you have an infinite bootloop, try to remove ALL power from the unit. turning your car on and off is not good enough, you'll need to remove the power connector (dinplug) from the unit.. wait for a while and plug it in the unit again. (or remove the positve lead from your car battery)
now try again..
if that does not work press the screen with 5 vingers during bootup..
if it still doesn't work, try tapping on the screen from first power on. it should say "detected" in the upper left corner.
if it says detected, you can try flashing new firmware.
dutchcommando said:
the reverse camera works without android, so it works always despite of what the status of android is.
it seems you have an infinite bootloop, try to remove ALL power from the unit. turning your car on and off is not good enough, you'll need to remove the power connector (dinplug) from the unit.. wait for a while and plug it in the unit again. (or remove the positve lead from your car battery)
now try again..
if that does not work press the screen with 5 vingers during bootup..
if it still doesn't work, try tapping on the screen from first power on. it should say "detected" in the upper left corner.
if it says detected, you can try flashing new firmware.
Click to expand...
Click to collapse
Thanks dutchcommando. I will try that right away and report back. Cheers.
dutchcommando said:
the reverse camera works without android, so it works always despite of what the status of android is.
it seems you have an infinite bootloop, try to remove ALL power from the unit. turning your car on and off is not good enough, you'll need to remove the power connector (dinplug) from the unit.. wait for a while and plug it in the unit again. (or remove the positve lead from your car battery)
now try again..
if that does not work press the screen with 5 vingers during bootup..
if it still doesn't work, try tapping on the screen from first power on. it should say "detected" in the upper left corner.
if it says detected, you can try flashing new firmware.
Click to expand...
Click to collapse
I tried all of your recommendations but no luck. I was not even able to get the detected message to appear on screen.
Strangest thing is that it worked fine the entire day until I installed the backup camera and put it into reverse for the first time. After that it never worked again.
I know you mentioned that the reverse camera has nothing to do with the android part but that's exactly when it locked up.
Hekg said:
I tried all of your recommendations but no luck. I was not even able to get the detected message to appear on screen.
Strangest thing is that it worked fine the entire day until I installed the backup camera and put it into reverse for the first time. After that it never worked again.
I know you mentioned that the reverse camera has nothing to do with the android part but that's exactly when it locked up.
Click to expand...
Click to collapse
do you have an external amp or powered antenna connected to the HU to?
it seems there is either a problem with a groundloop, or a hardware problem..
disconnect the camera from the HU (the power switch cable and the plug) and any other powered stuff, so you just end up with the head unit having 12V, ACC and GND, and give it a try again..
(i'm rooting for you!:laugh
dutchcommando said:
do you have an external amp or powered antenna connected to the HU to?
it seems there is either a problem with a groundloop, or a hardware problem..
disconnect the camera from the HU (the power switch cable and the plug) and any other powered stuff, so you just end up with the head unit having 12V, ACC and GND, and give it a try again..
(i'm rooting for you!:laugh
Click to expand...
Click to collapse
Thanks ducthcommando! The seller tells me that it's a bad motherboard and is willing to send me a new motherboard for me to replace but I'd rather get a new unit. Either way I'm going to try out what you told me by unplugging everything except the basic power plug and see if that works.
I'm weary of these android head units now. Do you have any good recommendations for single din PX6 units? Thanks.
good to hear the seller takes some action!
and no, i don't have any single din units to recommend..
the best of the best are cloned fast and easy, so if one says you need the blablabla 9X pro, and you do a search for it, you could well end up with a fake unit...
also there are way, way more knowledgeable people here who know trusted resellers and best brands..
Hi there,
After doing an upgrade my unit it stuck with a black screen and need to get into recovery mode in order to reload a working firmware.
Anyone any idea how to get there?
Tried the reset button for some time with and without home or on/off button and also removed the power source and pressed reset while putting power back but nothing seems to work
So i'm stuck for now :crying:
Any help?
Did you ever get your unit fixed? Did you try restarting with a USB plugged in with the firmware file on it?
No sorry... never got it working again. Had to send it back for a replacement unit.
I've been doing a lot of back and forth with their support on another issue and I've updated my MCU and software so many times now I thought maybe I'd be able to give you a hand.
Do you use any navigation apps on your Avant4? When I use ones that have voice navigation, the voice is getting truncated at the start and end of the directions. Some apps more than others and it seems to be related to those apps that use TTS (Text to Speech).
I'm using Waze via Android Auto. So i'm not having this problem.
So it runs from your phone and just displays on the Avant4? I have Waze running on the unit directly and it gets truncated.
I have al running on my phone and use a Android Auto box.
U can buy it from Avin USA. See website for all options on your Avant4.
wouterverboom said:
No sorry... never got it working again. Had to send it back for a replacement unit.
Click to expand...
Click to collapse
If you hold the volume knob until it starts blinking then let go and hold it down again it will boot the unit into recovery mode.
Hello everyone,
I have a problem:
Out of nowhere, my Head Unit turn the music to the max volume, the button response after a maximum of 10 seconds, then I can turn down the volume. Also sometime, if I press anywhere on the screen, the radio turns off or restarts.
think is something related to the software.
Is there any update for this headunit? i attach some photos of the MCU and system version.
I tried to find the device's name/model and updates, but without success. (I've tried already factory reset).
thanks in advance for thinking along.
Greetz from Amsterdam
Hi, try first disconnecting canbus box if you have it at all on this device. Then start up head unit without canbus and wait for 30 sec then shut down headunit and car engine.
Connect canbus again on the back.
Start in contact mode of car, and as soon as unit starts start tapping on center of screen with all five fingers. When reovery mode activated it will proceed automatically and finish. (procedure will erase data and install again!)
Then try if errors and bugs are fixed.
Hello, just an update. Unfortunately this trick doesn't work. Is there a software update for it?
Ask your seller for solution, probably will be or you must do complete install / flash of ROM memory and install again everything.