I have seen several threads with issues similar to mine; however, none with this exact issue. Everyone seems to be running into trouble trying to install updates or flash the unit. This is not what happened in my case. I bought this Android Head Unit on Ebay a few months ago. It has been working just fine until a few days ago. It gave me an error message about "tw has stopped" or something similar. All I could do was press "ok" over and over again. It just kept popping back up. So, I left it alone, got where I was going and turned the car off. When I turned the car back on all the unit would do was either show a white screen, a screen with multi colored lines, or the boot up logo (Toyota symbol in my case) and then back to the white or multi-colored screen. It has gone to the "Android" logo a couple of times; however, never gets past that point. I hear static. That's it. I put a CD in and it ate it. Won't give it back. I've pressed the reset button. It just loops back to the blank screen with static. Sometimes it will boot all the way to the Android logo but no further. Most of the time the backup camera is not working. If the bootup gets to the Android screen, the backup camera will work. I emailed the Ebay seller and they said they were going to send me a file. When I asked when they were going to send me a file they said "Hello Friend, the Android 6.0 update is not ready yet". I emailed again and asked if they could just send me a file to restore the current version. I'm kinda stuck until they send me a file I guess. I don't really know exactly what version I have on there now. 4.4 I think; however, I know there is a lot more to it than that. I wish I'd made a restore file (if that's even possible). Also, there are no instructions as to how to get it to boot into recovery mode. I've tried lots of combinations of buttons, but I'm really just shooting in the dark here. Any helpful information anyone might have would be appreciated. I really have come to depend on the Navi and other functions. This unit fits right in my car and looks really slick. I was really enjoying having it until it quit working....
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
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 evryone,
I'm a bit in a pickle here, i got a smart TV (zephir store brand) that costantly loops trough the zephir logo and smarttv logo.
As far as i know the tv fuction perfectly fine until the previus owner tried to performe a firmware update, during the update something went wrong and now we are in this situation.
Till now i have tried the following:
Turning it of and on
Un plug the power and wait for 1h
Tried to perform a factory reset via remote
Tried to perform a factory reset while holding the power button
Tried to perform a factory reset while holding the power button and the volume down button
Tried to perform a factory reset while holding the power button and the volume up button
Tried to connect an usb keyboard
tried to connect via usb to PC
Nothing of the above showed any sing of response at this point the owner has given up on the TV but i still wana try to use it as a second monitor or something, so with all of that i'm coming here to seek the wisdom of the XDA forums. Any and all help would be apriciated form jailbraking to rooting, turning it into a monitor with no android fucionality, how to access the shell file anything at all.
Alright, so I couldn't find any firmware anywhere whatsoever for the Zephir brand. Tried loading a differend brand one for the same logic board. Managed to boot it but the picture was inverted and doubled. Made it to the source selection screen. Attempted to load a different firmware. The tv crashed while loading the booter. Now it won't even turn on the power indicator LED. So I guess it's well and truly cooked.
I could find the board online for like € 40 but I'm pretty sure they come without any firmware or OS? Does anyone know if it'd be worth a try, especially without being able to source the OEM firware?
Does anyone know if there is a way of making just the screen run on an arduino or something, I only need it to run HDMI anyways, 'cause I was planning on using it as a monitor anyways. The logic board is a CV538H-a.
If anyone has a suggestion I'd be glad to give it a go, otherwise i guess I'll bin it.
Hello, got a Chinese head unit, stuck in the android loading screen.
I have googled and tried every damn button combo to get it to recovery mode, read loads of threads in here ect.
My head unit only has power and reset buttons.
Anyway.
I have got a usb keyboard. I would like to know what buttons ect do I need to know to get it in recovery mode? I googled it but everything throws up 'how to display keyboard' or 'how to connect keyboard '
Not what buttons to press!
Also, is there any reccomended android ROMs to install instead? The one on it was always a bit meh.
Madmikefalkirk said:
Hello, got a Chinese head unit, stuck in the android loading screen.
I have googled and tried every damn button combo to get it to recovery mode, read loads of threads in here ect.
My head unit only has power and reset buttons.
Anyway.
I have got a usb keyboard. I would like to know what buttons ect do I need to know to get it in recovery mode? I googled it but everything throws up 'how to display keyboard' or 'how to connect keyboard '
Not what buttons to press!
Also, is there any reccomended android ROMs to install instead? The one on it was always a bit meh.
Click to expand...
Click to collapse
That is a difficult story, as we don´t have further information as 2GB RAM. That does not help in any way to help you out of this drama.
I would ask the seller for sending the needed files to recover your unit. No one else is able to help here... if there is no one with the same unit who can give some more information.
Issue... The seller is no longer available,
Madmikefalkirk said:
Issue... The seller is no longer available,
Click to expand...
Click to collapse
outch... That is terrible.
Do you have for luck some pictures of the "About tablet" pages? Otherwise there is no help possible. We need to know the MCU and Android version of this unit... but first of all the current used MCU.