Database Users

[Q] bricked, black screen, no pink screen, only vibrates

after a lot of fail attempts on flashing different roms and a lot of research, i found no way to unbrick my phone. so here are the simtoms :
1. the phone does not boot or load anything when i put the battery and try to start it normaly(it only vibrates).
2. i have tried already V+/- buttons + Pwr on button for pink screen etc. but no response from the phone.
3. i plugged the usb cable without the battery and i pressed the same key combo but still nothing, it only just vibrates.
4. i used a FAT32 2GB sd card with the dloader and i pressed the V+/- + the PWR on button but the updater never showed...
so i am still a bit confused of how can i fix this kind of brick....
extra info :
1. used to have stock rom, froyo but i cant remember the version...
2. twrp 2.5 not sure about the version
3. the pc recognises the phone as: Ideos USB Device (info from USBDeview)

bump up

How you bricked it would help a bit to troubleshoot.

Soft bricked my T280 and so confused!!

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.

Galaxy S7 Edge not bootable, Bootloader Exception, No key combos can power it off

Today, I was using my phone, and then it starting running really slow, so I decided to restart it. I powered it off like normal, but then when I went to try to turn it on, nothing happened. So I decided to plug it up, and that's when a screen came up saying the following message in red text on a black background:
Bootloader exception
[ AST_STAT = 0x10000 ]
Exception: do_handler_sync: DABT_EL1(esr: 0x96000010)
pc : 0x8f026210 lr : 0x8f0261cc sp : 0x8f117f60
I've tried looking up other solutions such as holding down power+home+Vol-up, and it does nothing. Holding down power button does nothing either.
Whenever I plug up my phone to my computer, it shows up as "SAMSUNG Mobile USB CDC Composite Device" in the device manager, but it doesn't show up as a drive like it normally would when I plug it into my computer.
My phone was also on android version 7.0 using the stock samsung ROM. I have never tried to root the phone either, so that shouldn't be an issue in this situation.
Does anybody know what I could do to try to fix this issue?

I would use Odin to flash a new bootloader or just a new ROM, but the problem is, I can't find any way to reboot the phone to boot it into download mode.

Haven't tried this since the s3, but maybe it'll work.
Search on here for Galaxy S7 USB jig
edit:
https://forum.xda-developers.com/galaxy-s7/accessories/usb-jig-t3347793

Hold power + volume down + home for 15 seconds. It's supposed to shut off from there and attempt to boot up, but if it's still getting stuck on that screen there may be a major hardware issue. USG jig wont work on S6 and S7 already tried before.
You can hold the combinations for longer until the phone reboots multiple times and you see the light blue screen prompting for confirmation to boot download (ODIN) mode.

benjamen50 said:
Hold power + volume down + home for 15 seconds. It's supposed to shut off from there and attempt to boot up, but if it's still getting stuck on that screen there may be a major hardware issue. USG jig wont work on S6 and S7 already tried before.
You can hold the combinations for longer until the phone reboots multiple times and you see the light blue screen prompting for confirmation to boot download (ODIN) mode.
Click to expand...
Click to collapse
The buttons seem to be unresponsive. No matter what combination I press, or how long I press, none of them do anything. The phone just stays on that screen until the battery dies. And as soon as I try to boot it back up or plug it into the computer after it dies, it just goes back to that screen.

Yours phone mbo is dead,try to rma phone.Emmc chip is dead on mbo,no flashing will bring him back to life.

HAHAH WHO SAYS THE MOB IS DEAD... HEY BUDDY CHECK MY THREAD THERE IS A FIX
https://forum.xda-developers.com/s7-edge/help/s7-edge-bootloader-exception-0x-error-t3807183 <LINK
JUST COPY LINK AND IT WILL REDIRECT U TO THE LINK TRY MY FIX... ITS FREE BUT IF IT HELPS U DONATE ME.

Fix device without recovery mode

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?

Lenovo Tab4 8 plus / Tb-8704x only recovery menu

OK so hi guys,
after I tried, search, read tons of stuff, I finally decided to post a thread because I have no clue what else I could do.
I have have a lenovo tab4 8 plus / tb-8704x tablet by my hand and it only boots into the recovery menu like u hold volume down and power.
1. I don't know what happened to it before, I got it like it is.
2. If u plug in powe supply the red led blinks and u can only power it on by holding power for around 10 seconds, then the lenovo logo -> then recovery menu
3. Also If I hold down volume down and power it on it boots into the test app, to test if all stuff works.
4. In the test app I tested the volume buttons and recognized the up button had no response, so I took it apart and measured it. And if I press volume up then I get a good reading (peep). So the volume keys both are good.
5. The I tested flash a stock rom to test if that fixed the problem. I used TB_8704X_S001025_190606_ROW from the lenovo rescue program, but if I try to flash it inside the recovery menu over SD Card it only said wrong footer, error 21.
6. So i decided to use the qfil and the base stock rom TB-8704X_S000026_170707_ROW_QFIL. And after I always get sahara error messages if I use it only windows 10, I booted up an old win xp PC installed version .460 and the Qualcomm drivers, then hold down volume up plugged in USB, clicked the right Qualcomm com port and all went well first try no errors.
7. Then I unplugged the tablet, hold down power until it reboots but still nothing only recovery menu.
That's why I decided to post here, in hope someone can help, has new ideas or something else.
I hope all is good understandable.
//edit I uploaded to images, that's what I get if I boot f.e. the latest stock rom (named as factory_update.zip) from lenovo on an fat32 formatted sd card (exfat will give error and is not been able to mount)

Update:
I also managed to update to the latest rom from lenovo. Then it boots again in recovery mode but a different error.
For testing I've put the sd card with the same lasted update file inside. Then it starts the update process again. It starts install, tries to erase and then error and it boots again and then I'm in a boot loop until I remove the SD (because the image is named factory_update.zip so it's auto starts update process)
Pictures in attachment

Im pretty sure after all my testing, it's a hardware failure so, this thread can be closed.