Database Develop

[Q] Bootloop help (cannot access fastboot/adb)

Note: This is a re-post from the Verizon HTC forums (http://forum.xda-developers.com/showthread.php?t=2533042)
I just rooted and S-off my HTC via rumrunner.
No flash roms install or custom recovery installed.
I wanted to see if I still had CWM from my last root (I returned to stock via http://forum.xda-developers.com/show...highlight=s-on.
So I went into the bootloader or fastboot (I don't remember) and hit recovery. This did not send me to a CWM, but it appeared to be the stock version of recovery. The process took too long (I know impatient) so I turned it off via power button + volume down.
Now I come to you in need, my phone is constantly turning off/on only displaying the green htc text, no red text, then pausing for 8 seconds, then off again to black screen. The whole process lasts 12 seconds, and this had been going on for about 10-15 min atm.
Plugging it in, my computer does not have the time to recognize it with adb, or fastboot.
I cannot use the power button + volume down to go into bootloader, and pressing the power button does nothing.
Please help me.
So here's the update.
Screen is now black, meaning the boot up/down process has stopped.
I have tried these:
A. Hold down the volume down + power button for 20+ seconds.
B. Hold down the volume up + volume down + power button for 20+ seconds and let up on the volume up button when screen goes black.
These two methods results in a single boot up to green HTC text then black screen.
I suspect the device has lost most of its power. Tried it for a third time, the device is now unresponsive and remains at black screen.
Now I plugged the usb cable connected to the power adapter.
The device enters the aforementioned continuous boot loop.
I tried method A and B, and there are no results, the boot loop continues. Now the device returns to the low or no powered state.
Now the device is connected to the computer. The same happens as if it were connected to the power adapter.
Method A and B still do not work.
Results: holding down buttons longer do nothing for me. The device seems to have lost power, but when charged, immediately the device enters the boot loop state.
Note: when doing method A and B the trials were done when screen is on and when screen is off, still no results.
Now the screen is off and not connected to anything. The problem still persists.

geeibara said:
Note: This is a re-post from the Verizon HTC forums (http://forum.xda-developers.com/showthread.php?t=2533042)
I just rooted and S-off my HTC via rumrunner.
No flash roms install or custom recovery installed.
I wanted to see if I still had CWM from my last root (I returned to stock via http://forum.xda-developers.com/show...highlight=s-on.
So I went into the bootloader or fastboot (I don't remember) and hit recovery. This did not send me to a CWM, but it appeared to be the stock version of recovery. The process took too long (I know impatient) so I turned it off via power button + volume down.
Now I come to you in need, my phone is constantly turning off/on only displaying the green htc text, no red text, then pausing for 8 seconds, then off again to black screen. The whole process lasts 12 seconds, and this had been going on for about 10-15 min atm.
Plugging it in, my computer does not have the time to recognize it with adb, or fastboot.
I cannot use the power button + volume down to go into bootloader, and pressing the power button does nothing.
Please help me.
So here's the update.
Screen is now black, meaning the boot up/down process has stopped.
I have tried these:
A. Hold down the volume down + power button for 20+ seconds.
B. Hold down the volume up + volume down + power button for 20+ seconds and let up on the volume up button when screen goes black.
These two methods results in a single boot up to green HTC text then black screen.
I suspect the device has lost most of its power. Tried it for a third time, the device is now unresponsive and remains at black screen.
Now I plugged the usb cable connected to the power adapter.
The device enters the aforementioned continuous boot loop.
I tried method A and B, and there are no results, the boot loop continues. Now the device returns to the low or no powered state.
Now the device is connected to the computer. The same happens as if it were connected to the power adapter.
Method A and B still do not work.
Results: holding down buttons longer do nothing for me. The device seems to have lost power, but when charged, immediately the device enters the boot loop state.
Note: when doing method A and B the trials were done when screen is on and when screen is off, still no results.
Now the screen is off and not connected to anything. The problem still persists.
Click to expand...
Click to collapse
If I had to guess I would say your volume down is broken, else it would enter hboot
plug in the power and let it charge all day. then plug it to your pc and try to adb reboot bootloader or adb reboot recovery the instant you here the pc usb ingage.
once you get to the bootloader try and fastboot erase cache followed by fastboot reboot
after your phone boots you should be able to go back to bootloader and reinstall custom recovery

clsA said:
If I had to guess I would say your volume down is broken, else it would enter hboot
plug in the power and let it charge all day. then plug it to your pc and try to adb reboot bootloader or adb reboot recovery the instant you here the pc usb ingage.
once you get to the bootloader try and fastboot erase cache followed by fastboot reboot
after your phone boots you should be able to go back to bootloader and reinstall custom recovery
Click to expand...
Click to collapse
I have a few questions/concerns to this.
1. When I charge it, I can't stop the phone from the continuous boot. I'm afraid that doing this all day might hurt the phone more.
2. Currently I have been charging it via computer (still boot loop), and the computer does not recognize it at all. I think there is really not enough time because the loop duration is only a few seconds.
3. Since the phone is connected to the computer, the commands adb reboot bootloader and adb reboot recovery does not work. Error: device not found.

geeibara said:
I have a few questions/concerns to this.
1. When I charge it, I can't stop the phone from the continuous boot. I'm afraid that doing this all day might hurt the phone more.
2. Currently I have been charging it via computer (still boot loop), and the computer does not recognize it at all. I think there is really not enough time because the loop duration is only a few seconds.
3. Since the phone is connected to the computer, the commands adb reboot bootloader and adb reboot recovery does not work. Error: device not found.
Click to expand...
Click to collapse
well have you held the phone under a bright light and held just the power down for 15 seconds and let go when the phone go's off ?

clsA said:
well have you held the phone under a bright light and held just the power down for 15 seconds and let go when the phone go's off ?
Click to expand...
Click to collapse
So what is this method supposed to accomplish?
I did this and the phone stopped the continous boot. However when I tried to go to hboot it went back into the loop. I did this twice, and I'm able to stop the loop with the bright light method, but I don't know what to do from here.
Note: when plugging phone into computer, the loop starts again.

geeibara said:
So what is this method supposed to accomplish?
I did this and the phone stopped the continous boot. However when I tried to go to hboot it went back into the loop. I did this twice, and I'm able to stop the loop with the bright light method, but I don't know what to do from here.
Note: when plugging phone into computer, the loop starts again.
Click to expand...
Click to collapse
will the phone charge when in the off state / not from PC ?

clsA said:
will the phone charge when in the off state / not from PC ?
Click to expand...
Click to collapse
Plugging the phone into the adapter, the phone charges, but the boot loop occurs again.

geeibara said:
Plugging the phone into the adapter, the phone charges, but the boot loop occurs again.
Click to expand...
Click to collapse
the phone should not bootup with the power cord plugged in from an off state (are you turning the phone back on ?)
turn off phone by holding power 15 seconds under a bright light
plug phone into outlet (not PC) let charge till green light comes on (not Red)
hold volume down and power for 10 seconds ( you should be in hboot)
plug phone to PC choose fastboot hit power
your now in fastboot usb
from here you reflash recovery
fastboot erase cache and reboot recovery
if your still in bootloop I'm at a loss, and seems your hboot is corrupted I think you have to return your phone to Verizon or HTC.

clsA said:
the phone should not bootup with the power cord plugged in from an off state (are you turning the phone back on ?)
turn off phone by holding power 15 seconds under a bright light
plug phone into outlet (not PC) let charge till green light comes on (not Red)
hold volume down and power for 10 seconds ( you should be in hboot)
plug phone to PC choose fastboot hit power
your now in fastboot usb
from here you reflash recovery
fastboot erase cache and reboot recovery
if your still in bootloop I'm at a loss, and seems your hboot is corrupted I think you have to return your phone to Verizon or HTC.
Click to expand...
Click to collapse
Well I don't know if it is truly off, I'm just assuming it is.
But yes as soon as I plug the phone into the power adapter the red led flashes on, and the htc logo appears, then the loop continues.
I'll probably take it into Verizon tomorrow and update on what happens.

Update: Welp, I gave up. I'm going to get my replacement soon and I'll be turning it into Verizon. Really it's not that bad of a loss since I just wiped the phone, only thing is I lost my screen protector and carbon skin

geeibara said:
Update: Welp, I gave up. I'm going to get my replacement soon and I'll be turning it into Verizon. Really it's not that bad of a loss since I just wiped the phone, only thing is I lost my screen protector and carbon skin
Click to expand...
Click to collapse
sorry to hear that mate!!!

Bricked but recognized in fastboot and recovery

Hello, it's my first question on XDA but I really like this community. So for my problem : after bug in lineage os I wanted returned on the official ROM but after flashing (with my flash tool) the phone doesn't want turn on, the screen stay black no vibrate no LED. On my computer the phone was sometime detected as a MTP devices. So i turn the phone on the fastboot to flash but went he is on fastboot the screen doesn't wake up but on the computer the phone is on fastboot and I can flash. After I tested the recovery so I flash TWRP and boot on this but the screen doesn't wake up but with ADB tool I see my phone and I can move in the phone with "adb shell". I tested all the thing I know to unbrick my phone so I answer you. I really thank you if you can help me.
PS: I don't speak very well English so I really sorry for all the mistake

Absolutely identical situation here, but for me the phone just died by itself at night. Reflashing stuff with EDL / Fastboot does not help at all.
With some combination of boot AND recovery it is visible as adb + mtp device, with some does not.
Should be noted that fastboot boot recovery.img does not boot recovery and loops, but holding up button while inserting usb cable does.

@Celeste.cote
@skydev
Usually you should try removing and reinserting the battery, but the Mi5's battery is not removable, as you know.
So what you wanna do is to force this behaviour by pressing the power + vol up + vol down buttons all together for about 1 minute (be serious about this - also try like 2 minutes if it doesn't work quicker!).
You'll notice that it has been working by seeing the Mi logo.
Solved the black screen of death error for me once.
How about you?

@Phil_Smith, thanks for the advice, well, it seems that the problem we have is a little different.
I have that behaviour (black screen + adb + mtp) sometimes only when trying to boot recovery, but when trying normal boot i get bootloader bootloop with "Mi logo unlocked".
I think i should make a thread for my own problem.
P.S. I think the power supervisor should shutdown (restart) phone if power button is being held for 10 seconds, except if in EDL mode!
I can also recommend doing poweroff from adb shell and removing USB cable immediately afterwards - it should power off the phone.

@Phil_Smith y really thanks you for your answer but that don't running on my phone... I think it's the motherboard who is broken because I have no vibrate no led and no screen. I give up for this phone... Thank you and @skydev I hope you find a solution

Anyone knows how to repair hard bricked phone?

I was flashing my phone and half way through my computer lost power. Now the phone does not start. I can't get it into fastboot, or flash mode.
Pressing 'vol up' + 'power' doesn't work either. Anyone knows how to repair a hard brick?

boringpie said:
I was flashing my phone and half way through my computer lost power. Now the phone does not start. I can't get it into fastboot, or flash mode.
Pressing 'vol up' + 'power' doesn't work either. Anyone knows how to repair a hard brick?
Click to expand...
Click to collapse
Does vol down + power work?
Does the charging animation show up?
Does the led emits a light?
At least you could say the support that your device turned of while applying a firmware update and that they need to give you a new device :silly:

MartinX3 said:
Does vol down + power work?
Does the charging animation show up?
Does the led emits a light?
At least you could say the support that your device turned of while applying a firmware update and that they need to give you a new device :silly:
Click to expand...
Click to collapse
No charging animation.
if I press vol up + power longer enough the red light will turn on, but it still can't be detected by the computer.....
btw, yesterday I updated my phone to firmware 52.0.A.8.25_R5B and install the new twrp but it was stuck in a boot loop, so I repeat this process four times and still no luck, until the fifth time my PC died on me bricking my phone........

boringpie said:
No charging animation.
if I press vol up + power longer enough the red light will turn on, but it still can't be detected by the computer.....
btw, yesterday I updated my phone to firmware 52.0.A.8.25_R5B and install the new twrp but it was stuck in a boot loop, so I repeat this process four times and still no luck, until the fifth time my PC died on me bricking my phone........
Click to expand...
Click to collapse
Did you "fastboot boot twrp" or "fastboot flash boot twrp"?
Weird, I hope the IT guys can help you.

same problem? you have solution?

Does holding volume down + power while plugging the phone into a computer show a green light?

how to repair hard bricked phone?
SOMC Flash Device show only
my Phone Model SOV37 Japan Au
i am try to Global Rom Flash Done
H8216_Customized IL_52.0.A.11.3-R2B
Sony Xperia XZ2 (SOV37 Convert To H8216 )
Bootloader Unlock Done TWRP Root Done
Phone Normally Open Global
2nd time try to Flash this file SOV37_KDDI JP_52.0.C.5.295-R13B
Flash Done but my phone hard bricked show only SOMC Flash Device.
No charging & if I press vol up + power longer enough the red light will turn on, but it still show only SOMC Flash Device. computer.
i need help Sir

Any System update Constant Fail - Fastboot Screen

Hi All,
I'll explain this as clearly and simply as possible and hopefully someone can help :fingers-crossed:
My oem 3T ran out of power, plugged into dash charger and no led, power button held down for 10secs and entered fastboot, got to some options by holding power and volume down, but none of the recovery,wiping cache,delete everything options worked (would always go back to fastboot)
I ended up following the unbrick tutorial on here (link - https://forum.xda-developers.com/oneplus-3t/how-to/unbrick-unbrick-tutorial-oneplus-3t-t3515306)
and got it back to factory state, HOWEVER, I cannot update the OS without it going into fastboot, if I THEN turn off and turn back on holding volume down it doesn't take me back to all the options I had (wiping cache, reset system settings ect) but shows me the android logo/loading screen with something like this in yellow text:
>>>> changing to aging
then I'm back to the original state before I tried to update the OS.
Any help would be MASSIVELY appreciated! :highfive:

I think I've discovered the issue to my own problem! - my volume button is stuck on up also!!
didn't realise this with the power button held makes the phone enter fastboot mode is any case - Can't believe there was never a problem with it in the first place and I didn't need to delete absolutely everything off the phone!!!!
https://forums.oneplus.com/threads/fixed-stuck-on-fastboot-mode-no-recovery.744099/

How to stop Nokia 2.3 from auto boot when charger is plugged in?

1. Automatic boot when charger is connected, power off this Nokia 2.3 then connecting the charger is like pressing the power button, it just do a normal start, also power it down while connected to to charger still it just do a normal rebooting.
2. Factory reset is locked (settings>backup and restore>factory reset>) that function is greyed out meanwhile it's not working even if you touch for ages.
3. Build number is not working, (settings>about phone>build number) tapping this function Has to unlock developer options hence this function is not working too There's no way I can enable debugging mode.
4. Recovery boot is locked, pressing power button + Vol- it display this massage "as fastboot is locked..... your phone will restart in (3)s"....., Pressing power button + Vol+ the device just start normally,. Pressing all the three buttons device will not react at all, I tried holding these 3 buttons for 2 minutes but nothing happened.
5. No updates to fix this online currently running android 10 which means there's no android 11 patches for Nokia 2.3 to fix this issues
6. Can't root this device as almost every possibility is off.
PLEASE NOTE: THIS ANDROID 10 ROM AM USING WAS FLASHED TO THIS DEVICE BY A FRIEND MEANWHILE THE UPDATE FROM ANDROID PIE(9) TO ANDROID 10 (R) WAS DONE OFFLINE
IF THERE'S ANYWAY TO FIX THIS PLEASE ADVISE ON WHAT TO BE DONE OR IF THERE'S ANY SOFTWARE THAT CAN FIX THIS PLEASE HELP THIS IS KILLING ME .

Lin12 said:
1. Automatic boot when charger is connected, power off this Nokia 2.3 then connecting the charger is like pressing the power button, it just do a normal start, also power it down while connected to to charger still it just do a normal rebooting.
2. Factory reset is locked (settings>backup and restore>factory reset>) that function is greyed out meanwhile it's not working even if you touch for ages.
3. Build number is not working, (settings>about phone>build number) tapping this function Has to unlock developer options hence this function is not working too There's no way I can enable debugging mode.
4. Recovery boot is locked, pressing power button + Vol- it display this massage "as fastboot is locked..... your phone will restart in (3)s"....., Pressing power button + Vol+ the device just start normally,. Pressing all the three buttons device will not react at all, I tried holding these 3 buttons for 2 minutes but nothing happened.
5. No updates to fix this online currently running android 10 which means there's no android 11 patches for Nokia 2.3 to fix this issues
6. Can't root this device as almost every possibility is off.
PLEASE NOTE: THIS ANDROID 10 ROM AM USING WAS FLASHED TO THIS DEVICE BY A FRIEND MEANWHILE THE UPDATE FROM ANDROID PIE(9) TO ANDROID 10 (R) WAS DONE OFFLINE
IF THERE'S ANYWAY TO FIX THIS PLEASE ADVISE ON WHAT TO BE DONE OR IF THERE'S ANY SOFTWARE THAT CAN FIX THIS PLEASE HELP THIS IS KILLING ME .
Click to expand...
Click to collapse
Any help on this please?