Hello dear xda community
I have a px6 device from the company "Wondefoo" installed in my Mazda (without any hard buttons). It worked so far so good, but ZLink (Apple Carplay) didn't work, so I tried to fix this. To do that, I rooted the device, uninstalled the "ZLink" app and reinstalled a newer version. Then I tried to reboot. And then my problems started:
The device doesn't boot anymore. It tries to start up, I can see the Android 10 boot logo ("multi-media on-vehicle Navigation System" screen), but after about one minute, this logo disappears and the screen remains black.
OK, easy fix --> Just go into recovery mode and reset the device. But here's the big problem: I can't get into recovery mode.
Here's what I tried:
1. Ignition off and on --> Screen still black
2. Press "Reset" button (my device only has this one physical button) --> Boot process started again, but same outcome
3. Unmount the device, plug the power out, wait an hour, plug it in again and try again --> Boot process started again, but same outcome
4. Tried to connect with adb over Wi-Fi to the device (used the last known IP address) --> Connection timeout, Wi-Fi probably not started yet
5. Press&Hold "Reset" button until lights beign to flash to get into recovery mode --> Lights never flash because the "Reset" button somehow breaks the power circuit and when I release it, the device gets power again and boot process starts again with same outcome
6. Press&Hold "Reset" button for a minute, then release it, then press it again quickly within 1sec --> Boot process started again, same outcome
7. Tab with 5 fingers on the boot logo --> Nothing happened
8. Attached keyboard and pressed "Alt" + "PrintScreen" + "I" all the time --> Nothing happens. Keyboard is with RGB LEDs, so I saw it was active when the boot logo was displayed... Then, the LEDs on my keyboard turned off which was telling me that there is no keyboard input possible anymore
9. I even tried this: https://forum.xda-developers.com/t/new-method-enter-recovery-no-physical-buttons.4013453/ --> I just have one similar cable, not two as described in this post... So I put everything together again and just tried again --> Boot process started again, same outcome
Well... Is there any option left? I'm thinking about buying a USB male-to-male cable and try again with adb, but everyone tells me that I need to get into recovery mode first which I really can't
* Is there any other way to get into recovery mode? Maybe with my keyboard?
* Does anyone have another idea what I could try? Maybe without recovery mode?
Thanks in advance and cheers
T
As you said:
1. Ignition off and on
2.Have ready the needle for reset and do that instantly as you see the boot logo.
Once device restarted, wait until will see the boot logo again and pull out the ignition key.
3. Put in an USB socket a pen drive with the right firmware
4. Put back the ignition key and let it in ON position, without starting the engine. The update process will start, have a bit of patience until will finish. The device will restart at the end of the update, and straight after the boot logo, shortly press the reset button.
With a bit of luck, will have a fresh firmware on your device.
Thanks for your quick answer.
I tried what you said several times, but unfortunately I always end up on the black screen, no matter what I try.
My usb stick flashes quickly during the boot process, but nothing happens with it.
I also tried with an USB male-to-male cable and connect via adb, but it won‘t connect...
t-to-the-a said:
5. Press&Hold "Reset" button until lights beign to flash to get into recovery mode --> Lights never flash because the "Reset" button somehow breaks the power circuit and when I release it, the device gets power again and boot process starts again with same outcome
Click to expand...
Click to collapse
Are you sure you are holding the reset button for long enough?
On my machine (Dasaita) you hold the reset and the machine turns off... but you have to keep holding it even after it has turned off. Could be upwards of 1.5 minutes. Once the lights flash (and finished flashing), release and press one more time within 3 seconds.
Thank you for this idea. I have tried 30 seconds, but no more until today...
Now I tried with 1min, 2mins, even 3mins, but nothing happens.. I think the power is immediately cut as soon as I press the reset button. So there is probably no way to fix this easily
I also contacted the seller, but they have a talent to not understand my question. I just get answers like "press the reset button 2 sec and then everything is fixed" or "plug in the USB drive with the new ROM and press update" - of course that doesn't help.
Well I guess I'm left with one last thing: Throw this device away and buy a new one. Not from Wondefoo anymore of course, and hopefully with a working reset button.
I have the same issue. What did you end up doing?
Where did you buy your unit from?
Related
1. Download LG Mobile support tool (https://docs.google.com/file/d/0B687GQAEIeHiX0ZSeHp2NlhhalU/edit)
2. Install it as a normal software
3. Once it is successfully installed, run the program
4. Put your tablet into Download Mode (make sure the device is Powered Off and Unplugged, Press and hold Volume Up + Volume Down, then Plug In a USB Cable)
5. Run the LG Mobile Support Tool program
6. Click on "Options -> Upgrade Recovery" on the upright corner
7. It should start downloading stock firmware right away
8. Wait for it ......
9. A flash will be performed right after Once it finishes downloading
10. Wait until the tablet reboots. Done!!!
You may need to do a factory reset If you stuck in a bootloop
-Power off the device
-Press and hold the Power button and Volume down button at the same time
-When the LG logo shows up, let go both of the two buttons for a second, and then press them again
-A Factory reset promote should be shown on the screen. Follow the onscreen instructions to perform a factory reset.
How big is the download from LG server; is this a full system image or just recovery?
wpbear said:
How big is the download from LG server; is this a full system image or just recovery?
Click to expand...
Click to collapse
It's about 1.4gb but you can use the flash tool instead just download the kdz then flash via flash tool
We can use Loki to bypass the bootloader, we just need the dev to port the tool to our device! All that needs to be done is for someone to provide the build number and a copy of the aboot partition to him in this thread: http://forum.xda-developers.com/showthread.php?t=2358871 - will do this once my device has arrived
This worked and brought me back to stock everything. Perfect for me to return to store. Thanks
Thank you very much ! My tablet not boot with the last slimkat build unofficial....
I only see the UK stock Rom in other threads, will this reset a US tab back to the stock Rom?
Hi, thank you for this tutorial.
I made a huge mistake flashing a 4.4.2 Kernel (http://forum.xda-developers.com/showthread.php?t=2617476) on my stock rooted rom (I misunderstood the instruction and thought it was stock-compatible...).
Consequently, my G Pad is not able to boot anymore, even in recovery mode.
After several attempts, I succeed in putting the G Pad in download mode and I followed the procedure described in post #1. During the downloading process, I was surprised that the G Pad "reboots" periodically, by staying in download mode. This didn't bother me until the next recovery step.
Indeed, during the S/W upgrade, this reboot leads to "losts phone connection" error and recovery failure... It seems to append every 2min30s.
Do you have any idea of why it happens or what is it ? Any trick to make the G Pad stay in download mode longer ?
Make sure your device is fully charged and turned off.
Simultaneously press and hold the power and volume down buttons.
When the LG logo shows up, release the power button only.
Now press and hold the power and volume up button while keeping your hold on the volume down button.
When the factory reset screen appears, release your hold on all buttons.
Press the power button to continue.
Press the power button again to confirm if you’re sure you wish to continue with the reset.
For the OP this is the true hard reset button combination!
Thank's for your advice r3stor3 ! :good:
You were right, my G Pad had indeed too low battery to recover, although it has been plugged all day to my laptop. So I charged it all night with the LG charger and tried the recovery process again in the morning (the one in OP #1, not the hard reset), and it worked !
Nonetheless, after recovery, the system display only 1% battery. But that's another story...
Have a nice day !
[Edit : Nevermind, after being fully discharged, it starts to charge again. Everything is fine now.]
I'd like to flash a custom recovery and cm11 on my LG g pad. I'm worried about my warranty. Does this methods would put my tablet back as day one in order to return it if I ever need to?
Envoyé de mon LG-V500 en utilisant Tapatalk
Black screen
I was as a fool to install this:
http://androidforums.com/esteem-all...w-get-out-clockworkmod-recovery-bootloop.html
after a cwm boot loop. Now it is dead, even doesnt start in download mode. Just black.
Its over, isnt it...
Gogolo2 said:
I was as a fool to install this:
http://androidforums.com/esteem-all...w-get-out-clockworkmod-recovery-bootloop.html
after a cwm boot loop. Now it is dead, even doesnt start in download mode. Just black.
Its over, isnt it...
Click to expand...
Click to collapse
Although I didn't try and flash what you did, I wasn't able to put mine into Download mode to recover it either and only received a black screen! Turned out it was just ridiculously low on charge. I knew it was 'working' because with a USB cable in to the PC and holding the power button on the tab it was making connect and disconnect noises. Your best bet is to plug it into the mains charger and hold the power and/or power + vol down (I'm not sure what worked, I did a combination) until you get an LG logo. when you get to that, let it charge fully. (You should see the battery logo on screen)
Shouldn't have a problem once it's fully charged.
jim380 said:
1. Download LG Mobile support tool (https://docs.google.com/file/d/0B687GQAEIeHiX0ZSeHp2NlhhalU/edit)
2. Install it as a normal software
3. Once it is successfully installed, run the program
4. Put your tablet into Download Mode (make sure the device is Powered Off and Unplugged, Press and hold Volume Up + Volume Down, then Plug In a USB Cable)
5. Run the LG Mobile Support Tool program
6. Click on "Options -> Upgrade Recovery" on the upright corner
7. It should start downloading stock firmware right away
8. Wait for it ......
9. A flash will be performed right after Once it finishes downloading
10. Wait until the tablet reboots. Done!!!
You may need to do a factory reset If you stuck in a bootloop
-Power off the device
-Press and hold the Power button and Volume down button at the same time
-When the LG logo shows up, let go both of the two buttons for a second, and then press them again
-A Factory reset promote should be shown on the screen. Follow the onscreen instructions to perform a factory reset.
Click to expand...
Click to collapse
Wow this just saved my life!!!!!!!!!!!!!!!! :good::good::good::good::good:
Life saving!
r3stor3 said:
Make sure your device is fully charged and turned off.
Simultaneously press and hold the power and volume down buttons.
When the LG logo shows up, release the power button only.
Now press and hold the power and volume up button while keeping your hold on the volume down button.
When the factory reset screen appears, release your hold on all buttons.
Press the power button to continue.
Press the power button again to confirm if you’re sure you wish to continue with the reset.
For the OP this is the true hard reset button combination!
Click to expand...
Click to collapse
omg this saved my behind!!!!!!!!!!!!
flashed cm11
got stuck in boot loop
no recovery
no OS
no download mode
did this to factory reset and tada! im in recovery again!!!!
i love you man for posting such clear instructions to get into the hard reset with the hardware keys
hope this helps many
thanks for the info.
Tapatalk を使用して私の One から送信
When I try do the post #1, the message appears: "No upgrade itens to fix".
I try back the system date to december and the program recognize a upgrade, but it stop work.
Any suggestions?
wagneremanuel said:
When I try do the post #1, the message appears: "No upgrade itens to fix".
I try back the system date to december and the program recognize a upgrade, but it stop work.
Any suggestions?
Click to expand...
Click to collapse
Hi I have the same issue.. wondering how to solve it.. thanks
worldbreaker said:
Hi I have the same issue.. wondering how to solve it.. thanks
Click to expand...
Click to collapse
Me three. bricked my G pad and can't do the method outlined in the OP. I get that same error message: No Items To Fix
Please help!
Me too. No Items To Fix.
NYCguy2020 said:
Me three. bricked my G pad and can't do the method outlined in the OP. I get that same error message: No Items To Fix
Please help!
Click to expand...
Click to collapse
Due to my own actions (idiot) I deleted the recovery partition to try to regain 9gb it took from me. I would like to reformat and start again but I cannot. I have tried the following dell advice:
these are the steps to reset your tablet:
1. If your device is not turned off already, hold the power button for 10s to power it down.
2. Once it's powered down, press the power button to turn it on.
3. When the Dell logo appears (you may have to do it as soon as the screen turns on instead of wait for the logo to appear), hold the power button again to turn it off.
4. Do this process 3-4 times (they said 4, but it was only 3 for me) until you see something at the bottom saying that it's starting automatic system repair.
5. From there, you should see a menu. Choose "Troubleshoot", and the next menu should ask if you want to reset your PC along with some other options.
6. Choose reset PC, and when you get to the two options that ask "just delete files" or "fully reset PC", choose the second option. From there you should be able to follow the instructions to setup your device.
When I get to restore it asks for system files? I have tried the Dell recovery but that fails as well.
I have made a boot disk on my USB via an OTG cable which is recognised by the tablet, but it refuses to boot from this even after setting the bias to 1st boot from the USB.
Can anyone advise me of how to solve this problem and reformat and start again.
Hi,
I thought I could enter the Hidden Menu and change the Fast Dormancy setting into disabled, so I did it and wanted to reboot my phone. The phone turned off, and was doing its boot up procedure, while it started behaving abnormally. The LG logo popped up for about 5 seconds (so it didn't leave the bootloader), turned off for 10 seconds and then again the whole process repeated. I thought that was a bootloop, so I turned it off, entered Factory Reset menu, chose appropriate options and waited for the reset, but the phone didn't perform the action. Then I tried to get into download mode, but to no avail - the phone kept going with bootloop. I'm still struggling to do this; the only menu I could get into was the Factory Reset one.
Could anyone help me get my phone back into function?
D802, 20G stock
Thanks in advance!
That's weird. I always disable fast dormancy after a reset or a new rom flash and I've never had any issues.
What comes instead of download mode? If nothing, Are you sure you're doing it correctly?
Press and hold the power button for 10-15 seconds.
Plug the phone into the cable, then press and hold volume up and plug the cable into the computer. That should trigger download mode.
Thank you for your help.
I know that's weird, I've entered Download mode numerous times using the combination that you provided and can't do it this time. The strangest thing actually is that the factory reset menu does show up (though it does nothing), while Download mode does not - it seems to be actually unaffected by using the combination and is still stuck in a bootloop. I have no idea what steps should I take in order to recover my phone.
I forgot to mention that the phone wasn't even rooted then, which makes it even more mysterious...
Ouch! Well what comes up when you enter download mode? Fastboot? Black screen?
If you're still covered by warranty take it for a replacement. I doubt fast dormancy alone has messed up your device. If it truly has, then try booting the phone without a sim card.
Normally when I insert the USB cable with vol up button pressed, the LG logo shows up, then the notification of Download mode and finally the Software Update screen. But this time, only the LG logo shows for about 5 seconds, as if I normally booted it using Power button and does not get me into neither Download nor Fastboot mode.
Well, I took a look at other options in this hidden menu, but still, could it brick that hard even then?
I doubt whether I'm still eligible for a replacement, as the device had been rooted already (though it's not at the moment). The whole process also takes quite a lot of time, which is why I wanted to avoid it. Is there any method to bring it back to life?
I wanted to revive my phone using the method linked with flashing the whole partitions onto my phone, but Ubuntu didn't even notice that any drive was connected...
Am I doing something wrong? I mean e.g. is the combo Vol Up + cable still the same in D80220G? Is there any other way of accessing the phone through my computer? Can I somehow stop this bootloop from continuously happening? Doesn't the fact that I can get into Factory Reset menu help in any way?
Thanks for your help in adavnce!
I recently updated my Samsung Galaxy Tab A T280 to the latest firmware and I lost my root. So this afternoon I re-rooted it. Or I attempted to, anyway. Everything seemingly went fine, and I booted into TWRP just fine. I went to flash the ROM and I also selected wipe cache/davlik cache to be done as well, and tapped reboot. My device then turned off and when it started the reboot, it got stuck on the Samsung Galaxy Tab A logo screen and would not move or power off by holding the power button (I tried for a LONG time by using a rubber band to hold it down so I didn't have to, with no luck), and every other combination of buttons wouldn't do a thing, except for holding power + vol down, which made it turn off and back on, but it wouldn't finish rebooting and it just got stuck at the Samsung Galaxy Tab A logo again. So then I thought that maybe plugging it into a charger might not be a bad idea, and after holding down power + vol down again, it turned off and turned on and showed a battery with a charging symbol. I've had it plugged in for an hour and it does not show a charge or do anything except for go back to that boot logo if I unplug it from the charger and again hold down power and volume down separately.
I know it's not hard bricked because it is somewhat responsive so I think there's a chance to fix it, hopefully. I just want it to turn on and fully reboot into anything or in any way that will allow me to be able to fix the issue. My computer will not recognize the device so ADB is not an option right now unless I'm wrong.
Thanks a lot guys, I am so confused and could really use some advice.
What firmware did you install
Try to install original firmware via software "Samsung Smart Switch" on your PC with connected tablet.
I too recommend that you try installing the last firmware that you were on via Odin. Also, when you hit that screen lock issue after a firmware flash, where only the Samsung logo appears do this:
1. press and hold Home + volume up and volume down along with power button (that's all 4 buttons). Hold it there for at least 20 seconds and it should power off.
2. Once the device powers off keep holding the buttons but let go of the volume down button.
3. Once the tablet starts to power back up again release the power button and then in about 1 to 2 second release the rest of the buttons.
This should get you back into recovery. You should at least be able to restore any backup, that you should have already, on your external micro SD.
Good luck.. : )
"Chance Favors the Prepared"
the above post is 100% right. Reboot back into recovery and you'll be good to go. Also twrp has a option to reboot back to recovery so this doesn't happen, just a fyi for future knowledge. Best of luck..
You tried to flash a rom with twrp?
You need to flash stock firmware with odin.
Hi!
I have a problem with a galaxy a40 device, I flashed a stock ROM with Odin, everything went fine, green lights, PASS and all, but now the device just won't go pass the SM logo anymore. When I turn on, logo appears 2-3 secs I get a warning of the unlocked BL then logo comes back and after a second the phone restarts itself and the same goes on forever ( well about several hours, and after that it just shuts off somehow ). I cannot enter recovery mode or download mode at all. I keep pressing the combinations Power + Vol Down, Power + Vol Up, All three and every combinations I have just found on the internet so far. Odin doesnt recognize the phone, which is not a surprise since it won't start up. I have tried with adb but waiting for device is all I get.
How is it even possible that I cannot enter download mode at all? There was no problem with the physical keys, and the power still works, I cannot test the Vol buttons tho.
Has anyone ever had a problem like this? How can I come back from this? Is there a way to flash a ROM without download mode or turned off phone?
Thanks for any help!!
The download mode for this model is different from previous Samsung's :
IIRC, with the phone off, you need to hold VolumeUp and VolumeDown, then plug in the USB cable connected to a computer (you may need to press Power to power up the phone, I can't recall properly).
From there, you should be able to restore a stock ROM with Odin.
Let us know if it helped !
gmarko247 said:
Hi!
I have a problem with a galaxy a40 device, I flashed a stock ROM with Odin, everything went fine, green lights, PASS and all, but now the device just won't go pass the SM logo anymore. When I turn on, logo appears 2-3 secs I get a warning of the unlocked BL then logo comes back and after a second the phone restarts itself and the same goes on forever ( well about several hours, and after that it just shuts off somehow ). I cannot enter recovery mode or download mode at all. I keep pressing the combinations Power + Vol Down, Power + Vol Up, All three and every combinations I have just found on the internet so far. Odin doesnt recognize the phone, which is not a surprise since it won't start up. I have tried with adb but waiting for device is all I get.
How is it even possible that I cannot enter download mode at all? There was no problem with the physical keys, and the power still works, I cannot test the Vol buttons tho.
Has anyone ever had a problem like this? How can I come back from this? Is there a way to flash a ROM without download mode or turned off phone?
Thanks for any help!!
Click to expand...
Click to collapse
Here the same problem, have a40 in loop and never get rocgnized for computer, tryed many different cables, and installed a booring large amount of drivers software and nothing...
you need to power off device completely. let battery drain if you can't shut down. press and keep holding volume down + plug in usb cable for Odin3 (I doubt both?)
aIecxs said:
you need to power off device completely. let battery drain if you can't shut down. press and keep holding volume down + plug in usb cable for Odin3 (I doubt both?)
Click to expand...
Click to collapse
Generic answers, repeated 800 times why really need to waste a post with that? and that not was the problem:
1- For no usb recognition, is this phone bad design, in the back tap where is the battery in the samsung logo more or less if you push with fingers and charge is because the design of baterry is so crap and your usb port goes off when the under tap cable moves or just get little out of conection. If you can get working after push, usb on phone will do too.