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!!!

How to charge battery in fastboot mode

Hello,
I want to know how i can charge my battery in fastboot mode , my battery is below 15 % and my phone and i have to do a factory reset with the 3 button method.
Thx

You can't charge battery in fastboot mode.
Turn on device by pressing and holding power + vol+ and charge it in recovery mode.

Thx, but i cannot stay in recovery mode , phone shows recovery mode for 1 sec than it go's to fastboot

It's a bad sign. Seems like kernel panic. Anyway, even if you will charge battery, you won't be able to flash firmware.

Kostyan_nsk said:
It's a bad sign. Seems like kernel panic. Anyway, even if you will charge battery, you won't be able to flash firmware.
Click to expand...
Click to collapse
Thx, got my phone back to the shop, they sent it back it returned with a new mobo

Xiaomi mi5 suddenly dead

My xiaomi mi5 yesterday had low battery and I wanted to put it on edl mode and update it to the newest miui.
While I was doing so, the phone shutdown and never answered again. Doesnt boot, doesnt go to recovery mode, doesnt go to fastboot or edl, is not recognized AT ALL by windows, doesnt show charging light, nothing at all. Im kind of desperate and have no idea what to do...

Charge it up. Then hold the button combination for fastboot mode for about a minute or two. Fastboot screen should appear and so should twrp laterwards. Happened to me twice. The phone was completely dead nothing responded. Then i did this to fixit

Huawei p9 lite 2017 bootloop

Hello, my young brother just bootlooped his new phone, he tried to root the device.
He was following this tutorial - https://forum.xda-developers.com/huawei-p9lite/how-to/guide-unlock-bootloader-twrp-root-t3405701
Unlocking bootloader went fine, then installing TWRP went (probably) fine, then the phone needed another factory reset. And since that moment, there is just "Your device has been unlocked..." and we can't do anything. Going to recovery is impossible. The battery is above 50% so waiting for it to go down on its own will take over a week.
We have a backup made with HiSuite.
I'm not really into huawei, so I've not a single clue what to do. Please, help us guys. Thanks in advance.

Search for firmware flashing with dload method.
Sent from my EVA-L09 using Tapatalk

I'm not any good at such things, really. I don't want to brick the phone, that's why i'm asking you for help. And your help didn't enlight anything, really. So sorry for my ignorance, but I would be greatful if you could explain it in easier way. Thanks in advance.

Just HOLD Volume Down & Power Button Together . Realese Power Button & HOLD Volume Down button when Huawei Logo Appear than You reboot to TWRP(If Install)
Just cheack TWRP installed or not

It's not installed. I have no idea how to boot into system, it just loops. I can't even enter fastboot mode.

ethernity7 said:
It's not installed. I have no idea how to boot into system, it just loops. I can't even enter fastboot mode.
Click to expand...
Click to collapse
Turn of your phone than HOLD Volume Down button than connect to usb than yout phone reboot into fastboot

That's what I try to do. Fastboot doesn't load when i hold volume down + power. I can't turn the device off because it just continously starts over and over again. The phone starts normally when battery goes down completely, system loads but then phone goes off due to lack of battery.

ethernity7 said:
That's what I try to do. Fastboot doesn't load when i hold volume down + power. I can't turn the device off because it just continously starts over and over again. The phone starts normally when battery goes down completely, system loads but then phone goes off due to lack of battery.
Click to expand...
Click to collapse
Sent me a massage after you going to Fastboot

I can't enter fastboot, it doesn't start. It just restarts and i see the screen "phone has been unlocked and can't be trusted, phone is booting..." something like that.

you cant enter fastboot, if you have not... do you even know, what you need to do, to enter fastboot? there is more than two thing to do, so, does you realy know what need to do ? call all thngs you need to do, to enter fastboot please.
got similar problems, because i instaled wrong custom recovery.
there are 2 sugestions, got in fastboot, im sure, its working if do it properly and instal proper recovery, for your model. second, use dc phoenis here
ps. why this post are in p9 not p9 lite forum?!

Well, I plug the device to PC using usb cable and when it's bootlooping I hold volume down and power button. That's how i was entering fastboot before. Now it doesn't work.
I've got stock recovery.

hold power button ~30 sec, force restart. even then nothing? well, if fastboot not working, then its gone. Ofcorse, there need to be a way, how you put on board files to work software, but im sure, thease things have only huawei.

The phone is just bootlooping, nothing else. If the battery goes down and i plug it to its charger I'm able to boot normally into the system. But once i try to turn it off it bootloops again.

ethernity7 said:
Well, I plug the device to PC using usb cable and when it's bootlooping I hold volume down and power button. That's how i was entering fastboot before. Now it doesn't work.
I've got stock recovery.
Click to expand...
Click to collapse
Turn of your phone than HOLD VOLUME DOWN & CONNECT TO USB
---------- Post added at 11:03 AM ---------- Previous post was at 11:01 AM ----------
ethernity7 said:
The phone is just bootlooping, nothing else. If the battery goes down and i plug it to its charger I'm able to boot normally into the system. But once i try to turn it off it bootloops again.
Click to expand...
Click to collapse
Sent me friend request on Facebook www.facebook.com/Rakhib.Mistry
I will tell you how to Unbrick. Don't worry i will want money from you

I can't turn it off. It automatically turns itself on and catches bootloop. I just wrote that fastboot doesn't load at all

[Bootloop] Xiaomi Mi A2 - PIE V10.0.02

Good morning people,
Hope you are well!
I updated my Mi A2 via OTA to PIE, it was in Bootloop, I got MiFlash back to OREO (V9.6.16.0), and I tried to install PIE, now for Fastboot MiFlash , but my cell phone was again in Bootloop.
Does anybody know how to solve this?
Or what happened to someone else?
Thanks for the help!

Claim warranty by far the most easy solution.
And yeah more people have this isseu.

had same problem... twice but solved very easy
just boot to recovery boot (volume down ad power)... connect power and left 10-15 minutes...
dont disconnect phone from power and press and hold power until reboot, release power button and voila, phone normally boot!!!!
i notice if you not wait long enough in recovery boot, phone remain in bootloop... just be patient and maybe helps... works for me twice...

dxdy said:
had same problem... twice but solved very easy
just boot to recovery boot (volume down ad power)... connect power and left 10-15 minutes...
dont disconnect phone from power and press and hold power until reboot, release power button and voila, phone normally boot!!!!
i notice if you not wait long enough in recovery boot, phone remain in bootloop... just be patient and maybe helps... works for me twice...
Click to expand...
Click to collapse
But when I do this, it goes into Fastboot mode (power and volume minus).
Are you talking about going into recovery mode?

ewertombarbosa said:
But when I do this, it goes into Fastboot mode (power and volume minus).
Are you talking about going into recovery mode?
Click to expand...
Click to collapse
just enter in fastboot mode and do nothing... only connect to power charger
is weird because i had two times this problem.. once after android 9 upgrade week ago, and second time today after factory reset
every times i cant do anything to work... this with power charger was stupid idea but is worked.... just connect charger in fastboot mode, wait 10-15 minutes and restart phone with power button... both times this worked for me...
i remember few years ago similar problem with Nokia/MS windows phones batteries and similar steps helped...

After instal january update and restart, on the phone see Android One logo and nothing is happening. After 5 minutes it switches off.
I'll get to the bootloader, but I can not unlock the bootloader (neither unlock critical). Is anyone able to help?

Use official xiaomi "MI FLASH TOOL" on Windows and flash with full stock image named "fastboot rom"
(Download image here: https://xiaomifirmware.com/roms/latest-android-roms-for-xiaomi-mi-a2/)
(You have to extract on Windows this tar.gz and tar also, and then flash with Xiaomi tool)
If you need help with this tool, read this "mi flash tool" tutorial:
https://www.themefoxx.com/2018/07/xiaomi-mi-flash-tool.html