can't flash custom roms, get put in qualcomm debug mode (qboot) - Moto Z2 Force Questions & Answers

Everytime I flash a custom rom in TWRP I have to reset my phone completely, it doesn't power on at all anymore. I fix it by using qboot which gets me back into fastboot, and then I start over by flashing a stock firmware with flashall.bat.
I'm able to boot into twrp via fastboot, but everytime I reboot after installing a rom it goes to a black screen and I can't go any further.

cloneman1 said:
Everytime I flash a custom rom in TWRP I have to reset my phone completely, it doesn't power on at all anymore. I fix it by using qboot which gets me back into fastboot, and then I start over by flashing a stock firmware with flashall.bat.
I'm able to boot into twrp via fastboot, but everytime I reboot after installing a rom it goes to a black screen and I can't go any further.
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In twrp, go to reboot option and swap your slot to the inactive one. After that, reboot to bootloader and flash all again, then boot to twrp and try flashing again.

Uzephi said:
In twrp, go to reboot option and swap your slot to the inactive one. After that, reboot to bootloader and flash all again, then boot to twrp and try flashing again.
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That's what I'm missing it don't say in the guides.

I figured it out I had to fix my slot B's bootloader. I still don't quite understand what happens when you flash things, or when it changes slot, but I got it to work for now.

I have my cell phone completely dead for the same. What is qboot and how is it used to resuscitate it?

Uzephi said:
In twrp, go to reboot option and swap your slot to the inactive one. After that, reboot to bootloader and flash all again, then boot to twrp and try flashing again.
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Whenever trying to swap the slot a to b, it goes hard bricked. Anyone has the clue?

Related

[Q]briked S3 i747

I tried to factory format my phone through TWRP, then when I tried to restart again, it never comes back.
I still have access to TWRP, but when I install zip files I downloaded, it always failed. I tried to use Odin, it failed to flash an image in.
Plz help me.
Many thanks.
Gambinohe said:
I tried to factory format my phone through TWRP, then when I tried to restart again, it never comes back.
I still have access to TWRP, but when I install zip files I downloaded, it always failed. I tried to use Odin, it failed to flash an image in.
Plz help me.
Many thanks.
Click to expand...
Click to collapse
What format option did you select in TWRP and hope you didn't accidently remove your OS? The device could fail to boot if you don't have an OS installed. You may be able to flash a complete stock restore image via TWRP. Would you recall what Android version you were on before the brick? Also what is your phone model and carrier?
Larry2999 said:
What format option did you select in TWRP and hope you didn't accidently remove your OS? The device could fail to boot if you don't have an OS installed. You may be able to flash a complete stock restore image via TWRP. Would you recall what Android version you were on before the brick? Also what is your phone model and carrier?
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Click to collapse
Mine was ATT S3 I747 with Android 4.3 system. I did wipe my OS during recovery. That caused the whole problem. Then I use TWRP to flash a system and a kernel in. I was unable to flash bootloader and modem in; I did not know what is the problem. The weird thing is that I successfully start my phone and used it for a while. When I rebooted it, it dies again. I tried to install the some boot update in this January. It never works again. Any advise?
Gambinohe said:
Mine was ATT S3 I747 with Android 4.3 system. I did wipe my OS during recovery. That caused the whole problem. Then I use TWRP to flash a system and a kernel in. I was unable to flash bootloader and modem in; I did not know what is the problem. The weird thing is that I successfully start my phone and used it for a while. When I rebooted it, it dies again. I tried to install the some boot update in this January. It never works again. Any advise?
Click to expand...
Click to collapse
You can try flashing a complete stock system to get your phone back to working condition. Since you already had 4.3, flashing zips often fails if there is a bootloader incompatibility. The stock restore should do it. Please go to the following thread ....
http://forum.xda-developers.com/showthread.php?t=2658486
Download the stock restore zip to your PC. Use another device or something to load it to a (micro) SD card. Insert the card into your phone. Boot into recovery mode and flash from TWRP. When done, wipe your cache/dalvik and reboot to system. Let's know if this works for you.

Only fastboot works on my zenfone.

Hi. I'm terribly lost.
I bought a ze500kl (z00ed) and played around with root, twrp and marshmallow. The last thing I did was installing marshmallow and then I wanted to flash twrp.
What I ended up with is a phone which you can't boot, you can't get into recovery and I'm not even able to flash any other recovery than the stock one. And even if I flash it 'successsuccessfully' I'm still not able to boot into it.
Code:
fastboot reboot-bootloader
yields the phone starting back into fastboot mode.
As far as I understood my bootloader seems to be locked.
How can I get my phone working again?
The command fastboot reboot-bootloader only boots you into the bootloader, meaning to the fastboot. If you want to boot to recovery, you need to select this option in the fastboot menu. I don't remember if you can use a fastboot command for that, and I can't turn off my phone to check.
On the ze500kl, when phone off, press vol- and power to enter recovery.
some progress
Thanks for the info. I did already try to wrok with the vol- button but it just keeps showing the ASUS and android logos and doesn't start twrp. I've succeeded to install the system thanks to the following site: (I c'an't post it cuz I'm not here long enough) however now I'm again not getting into twrp.
vanderguru said:
Thanks for the info. I did already try to wrok with the vol- button but it just keeps showing the ASUS and android logos and doesn't start twrp. I've succeeded to install the system thanks to the following site: (I c'an't post it cuz I'm not here long enough) however now I'm again not getting into twrp.
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Click to collapse
If you haven't unlocked your bootloader then you can't flash TWRP. You need to unlock bootloader. I have the 551ML so can't help here. Try the search function and read...
Try to erase your cache partition in fastboot with the command "fastboot erase cache", this might get you booting back into Android but since you've been playing around without doing the necessary reading, no guarantees...
To get to recovery, stock or custom, you must go through fastboot or bootloader mode. You need to use the volume key until it says recovery then hit power key. It will reboot the phone and most probably show you a droid on its back with "Error" above it (if it's still stock). Hold down power and press volume up to enter recovery.
ultramag69 said:
If you haven't unlocked your bootloader then you can't flash TWRP. You need to unlock bootloader. I have the 551ML so can't help here. Try the search function and read...
Try to erase your cache partition in fastboot with the command "fastboot erase cache", this might get you booting back into Android but since you've been playing around without doing the necessary reading, no guarantees...
To get to recovery, stock or custom, you must go through fastboot or bootloader mode. You need to use the volume key until it says recovery then hit power key. It will reboot the phone and most probably show you a droid on its back with "Error" above it (if it's still stock). Hold down power and press volume up to enter recovery.
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Click to collapse
I did qutite some experimenting today. What I'm currently ended up with is:
1) I can boot into the system.
2) I can't boot into the recovery of the Phone
3) I can boot the StockRecovery via fastboot however I can't boot TWRP by any procedure (Although I was able to do so during my experimenting. I don't understand why it sometimes works and sometimes doesn't)
4) My Phone is Rooted (at least it says so)
5) I have run the Unlock.Zip via TWRP when I had TWRP flashed however now I'm again at a point where I can't start TWRP at all.
I find this very confusing and I can't see any pattern to it. For now I'm OK with having a more or less functional phone but I'd like it to be more reliable and predictable in behaviour.
First of all you can't boot directly to recovery the way you are thinking. Booting into fastboot (actually called the bootloader) then selecting recovery is the normal way. You can't have 2 recoveries on your phone. So you probably did the tethered version of TWRP the first time. I don't have the link handy but you need to get the official TWRP and use fastboot to install.
Sent from my ASUS_Z00A using Tapatalk
You HAVEN'T UNLOCKED YOUR BOOTLOADER...
No recovery or custom rom will flash successfully... It will say it will, but you will either go into bootloop or just get stuck at ASUS logo...
Nothing will stick until the bootloader is unlocked, if you use tethered TWRP and flash a custom rom you will softbrick your phone until you flash a stock rom back on.
If you go ahead and flash TWRP onto your phone using fastboot then you will have NO recovery on your phone.
You have been warned...
ultramag69 said:
You HAVEN'T UNLOCKED YOUR BOOTLOADER...
No recovery or custom rom will flash successfully... It will say it will, but you will either go into bootloop or just get stuck at ASUS logo...
Nothing will stick until the bootloader is unlocked, if you use tethered TWRP and flash a custom rom you will softbrick your phone until you flash a stock rom back on.
If you go ahead and flash TWRP onto your phone using fastboot then you will have NO recovery on your phone.
You have been warned...
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Click to collapse
Well I disagree and I think you are wrong . I strongly assume that I have TWRP installed as I'm able to boot into it without having the phone connected to the computer.
Consequently I HAVE unlocked my bootloader and I DO HAVE a recovery on my phone. And of course I'm not able to install a custom rom seing that there aren't any for my model yet.
I think however that I've (for now) [SOLVED] my problem and we're drifting away from the original topic. Thanks for your quick help :highfive:

Loading into stock recovery after TWRP install

I recently bought an Oneplus 3 and wanted to root it, I succesfully unlocked my bootloader but when I try to flash TWRP and then load into the recovery mode the phone shows the oneplus logo for a few seconds and then turns itself off (even though ADB said it was succesfully flashed), when I reboot and go into recovery in brings me to the stock recovery.
Does anyone know how to fix this?
EDIT:
I previously had TWRP running on my Oneplus 3, at the first boot of TWRP I selected 'Read Only' because I saw that in a video, I couldn't flash a certain rom thats why I tought I had to update my TWRP, does this have something to do with it?
Anyone?
Don't let it boot into system. Fastboot TWRP, unplug your phone, boot into recovery manually (power + volume down).
In TWRP, select reboot system and it will apply a fix before it reboots and it should stick then.
Stock
krabman said:
Don't let it boot into system. Fastboot TWRP, unplug your phone, boot into recovery manually (power + volume down).
In TWRP, select reboot system and it will apply a fix before it reboots and it should stick then.
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Can this be apply on other devices? Because I am having the same problem
kelvinchinedu said:
Can this be apply on other devices? Because I am having the same problem
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Click to collapse
This is universal: After flashing OEM ROM, don't boot into system. Boot into recovery, you will get into TWRP and from there boot into system. Or after flashing OEM ROM, flash Magisk and then boot into system.
kelvinchinedu said:
Can this be apply on other devices? Because I am having the same problem
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Click to collapse
Yeah, what he said. You can reboot recovery from TWRP and TWRP will patch it or you can flash magisk and it will do the work. What you can't do is flash TWRP and then boot directly to system because the stock recovery will be restored. Realistically do both, reboot recovery and then flash magisk for the win. I congratulate you on searching BTW, this thread is more than 2 years old. You may want to consider perusing the appropriate section for your other device. If it's a newer device with AB you will have some specific procedures to follow relating to that.

Nexus 5x only shows backlit black screen after flash recovery

Hello,
after flashing recovery with latest TWRP (twrp-3.1.0-0-bullhead - md5 checked), I restarted the bootloader (fastboot restart-bootloader)
But from that point on, the phone only showed a black screen. it still shows in fastboot devices and boots, possibly to the pin-check. power volume down makes a screen capture sound there.
No screen in bootloader, no screen on boot. Only thing that seems to happen is the backlight switching.
Tried to restore factory defaults with the flash all bat from the stock builds, fastloader -w and the flash stock & unroot option from latest nexus root toolkit.
Does anyone have any other idea what I can try?
thanks in advance
RobertAUT said:
Hello,
after flashing recovery with latest TWRP (twrp-3.1.0-0-bullhead - md5 checked), I restarted the bootloader (fastboot restart-bootloader)
But from that point on, the phone only showed a black screen. it still shows in fastboot devices and boots, possibly to the pin-check. power volume down makes a screen capture sound there.
No screen in bootloader, no screen on boot. Only thing that seems to happen is the backlight switching.
Tried to restore factory defaults with the flash all bat from the stock builds, fastloader -w and the flash stock & unroot option from latest nexus root toolkit.
Does anyone have any other idea what I can try?
thanks in advance
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Click to collapse
I've never seen anyone restart the bootloader. Reboot but not restart. Hopefully they are the same but I have not a clue as to what that does to your phone after flashing recovery. For future reference after flashing recovery, boot into recovery, once in recovery, I always reboot to recovery again, then flash supersu.
I'm glad you have fastboot still. You could try this, flash_all again. Afterwards, boot into TWRP (don't install) do a factory reset and then reboot. Make sure your flash-all is installing everything. I always flash mine one at a time. Good luck
Tulsadiver said:
I've never seen anyone restart the bootloader. Reboot but not restart. Hopefully they are the same but I have not a clue as to what that does to your phone after flashing recovery. For future reference after flashing recovery, boot into recovery, once in recovery, I always reboot to recovery again, then flash supersu.
I'm glad you have fastboot still. You could try this, flash_all again. Afterwards, boot into TWRP (don't install) do a factory reset and then reboot. Make sure your flash-all is installing everything. I always flash mine one at a time. Good luck
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Click to collapse
Thank you for the reply. I will try a flash all with TWRP again.
as for the restart - i just looked it up - it was a reboot-bootloader command. Misspelled there.

M8s stuck in bootloader

Hello everyone. I got a M8s from a friend wich is stuck in bootloader. The recovery didn't work at the begin, so I flashed twrp-recovery-2.8.6.0-m8s-qlul.img (flashing recovery using htc_fastboot.exe flash recovery theimagename.img) and it worked, then I tried to install a custom ROM Android_Pandora_Rom_1.2_(Discontinued).zip wich went all the steps fine until: Optimizing applications 8 of 204..then phone shat down to black screen. I booted back to bootloader, recovery, wiped and go for a new install, same issue.
After that, I was going to install lineage-13.0-20170715-UNOFFICIAL-m8qlul.zip where the developer of this rom recommends twrp-3.0.2-0-m8ql.img so I tried to flash it (flashing recovery using htc_fastboot.exe flash recovery theimagename.img), then tried to acces recovery, brings me back to bootloader so fast, rebooted bootloader, tried again, same problem. Tried the fasboot erase cache, no help.
The Hboot state is Unlocked and the S is ON. I tried some other recovery images, as stock_signed or 3.0.1, tried the one from M8 ToolKit but all failed and I still can't access recovery, everyting I do, it brings me back to bootloader. I did htc_fastboot boot recoveryfile.img wich works, but useless, the dd if= method to set the recovery permanent load did not work after reboot, /data and /system can't be mountet, it seems the "boot recovery" option is 99% readonly.
Any advice, any help please? It would be much appreciated! Thanks in advance!
Hi McBad,
you could try the following. I also had some problems to access the recovery.
- Again bring the phone into fastboot, flash the 2.8 recovery and access it
- Do a wipe for factory reset, not just only cache
- after that try to flash the twrp-3.0.1-0-m8ql.img version, the other one worked for me neither
- the try to install the custom ROM LOS13
I hope this will help you.
clone
It would be great if that would work, but flashing a recovery does not work. I flash it, success message, try to access it, vibrates and bootloader pops back instantly. That is the problem.
Sorry for double post, but can anyone help me with this? This is the second day I struggle to make it work. Any chance to make the hboot locked again? It didn't work with oem lock command. I would like to lock it so I can put an official zip on sdcard so the hboot to restore it to factory stock, some RUU. Or get it s-off so I can flash a rom from fastboot? The phone does not have any ROM on it, image crc results system 0x0, recovery 0x0. Please, help!
Have you tried sideloading twrp ?
McBad said:
Sorry for double post, but can anyone help me with this? This is the second day I struggle to make it work. Any chance to make the hboot locked again? It didn't work with oem lock command. I would like to lock it so I can put an official zip on sdcard so the hboot to restore it to factory stock, some RUU. Or get it s-off so I can flash a rom from fastboot? The phone does not have any ROM on it, image crc results system 0x0, recovery 0x0. Please, help!
Click to expand...
Click to collapse
Did you use HTC fastboot ?
Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.
McBad said:
Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.
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Click to collapse
Is there any way you could flash twrp 2.8 again? Once in that recovery you have sideloading option which you could use to transfer latest recovery onto your device. Are we talking about the same process?
McBad said:
Yes, I used htc_fastboot. Use sideloading? Like boot the img file directly? Tried that too.
Click to expand...
Click to collapse
Sideload as follows ....
McBad said:
Hello everyone. I got a M8s from a friend wich is stuck in bootloader. The recovery didn't work at the begin, so I flashed twrp-recovery-2.8.6.0-m8s-qlul.img (flashing recovery using htc_fastboot.exe flash recovery theimagename.img) and it worked, then I tried to install a custom ROM Android_Pandora_Rom_1.2_(Discontinued).zip wich went all the steps fine until: Optimizing applications 8 of 204..then phone shat down to black screen. I booted back to bootloader, recovery, wiped and go for a new install, same issue.
After that, I was going to install lineage-13.0-20170715-UNOFFICIAL-m8qlul.zip where the developer of this rom recommends twrp-3.0.2-0-m8ql.img so I tried to flash it (flashing recovery using htc_fastboot.exe flash recovery theimagename.img), then tried to acces recovery, brings me back to bootloader so fast, rebooted bootloader, tried again, same problem. Tried the fasboot erase cache, no help.
The Hboot state is Unlocked and the S is ON. I tried some other recovery images, as stock_signed or 3.0.1, tried the one from M8 ToolKit but all failed and I still can't access recovery, everyting I do, it brings me back to bootloader. I did htc_fastboot boot recoveryfile.img wich works, but useless, the dd if= method to set the recovery permanent load did not work after reboot, /data and /system can't be mountet, it seems the "boot recovery" option is 99% readonly.
Any advice, any help please? It would be much appreciated! Thanks in advance!
Click to expand...
Click to collapse
You can't install lineage if you haven't upgraded your device with latest official update. I would try reinstaling twrp 2.8, do a wipe of cache, dalvik cache and system, Sideload CM 12; and see how it goes. As well, while in twrp I would try relocking bootloader but only after an unsuccessful attempt to flash said rom. I don't know what your experience with soft bricked devices is, but sometimes it takes a while, different usb cable or usb slot on your PC, correct files in adb folder, re-download of rom or recovery because it easily gets corrupted while downloading. And obviously a fully charged device. Let us know how it goes.

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