[Guide][Died bootloader] Problem with a black screen in twrp after installed stock MM - ZenFone 2 General

the problem is that you have the phone rebooted to twrp ,but the screen is black and seems adb
1.Wait for 5 to 10 minutes until the phone goes into twrp
2.You can check the "back"button if it vibrates,then you are on the right track
3.To find adb sideload ,I personally enjoyed another device to see where it is
4.Further connected to the computer and write
Adb kill-server
Adb usb
Adb devices(if written sideload means you entered)
And the team flash a Rom (better than the usual stock(not twrp))adb sideload rom name.zip rom name=the name of your .zip)Any LP stock Rom(if you finish early,it's nothing)
5.Further prescription adb reboot
6.Your phone reboots and then you'll be able to go to fastboot by holding the+button to zoom.volume
7.Then fastboot flash a greenshank sorg
And oops,there bootanimation and logo asus
Go into Rom and enjoy,if you want then reboot
8.in fastboot And flash twrp:
Adb kill-server
Fastboot flash recovery recovery.img
9.Next, choose Twrp in fastboot.And rejoice
Tested in Z008 and Z00A
P. s This is how I coped with such a problem
PS.s In twrp ,the device may be blocked,if it was there,you just have to swapnote from left to right to unlock the device
PS.s.IMPORTANT: after upgrading, even with a clean 184, then make a full reset in the settings, after a couple of minutes you may find that your phone becomes unresponsive, but it isn't! After a couple of minutes it reboot in recovery and do factory reset! After that, missing a sufficient number of bugs ranging from drop google services, and what's not sincenot contacts, not the arrival notification and so on.

Russiamen said:
the problem is that you have the phone rebooted to twrp ,but the screen is black and seems adb
1.Wait for 5 to 10 minutes until the phone goes into twrp
2.You can check the "back"button if it vibrates,then you are on the right track
3.To find adb sideload ,I personally enjoyed another device to see where it is
4.Further connected to the computer and write
Adb kill-server
Adb usb
Adb devices(if written sideload means you entered)
And the team flash a Rom (better than the usual stock(not twrp))adb sideload rom name.zip rom name=the name of your .zip)(if you finish early,it's nothing)
5.Further prescription adb reboot
6.Your phone reboots and then you'll be able to go to fastboot by holding the+button to zoom.volume
7.Then fastboot flash a greenshank sorg
And oops,there bootanimation and logo asus
Go into Rom and enjoy,if you want then reboot
8.in fastboot And flash twrp:
Adb kill-server
Fastboot flash recovery recovery.img
9.Next, choose Twrp in fastboot.And rejoice
Tested in Z008 and Z00A
P. s This is how I coped with such a problem
PS.s In twrp ,the device may be blocked,if it was there,you just have to swapnote from left to right to unlock the device
PS.s.IMPORTANT: after upgrading, even with a clean 184, then make a full reset in the settings, after a couple of minutes you may find that your phone becomes unresponsive, but it isn't! After a couple of minutes it reboot in recovery and do factory reset! After that, missing a sufficient number of bugs ranging from drop google services, and what's not sincenot contacts, not the arrival notification and so on.
Click to expand...
Click to collapse
giving this a crack now -- seems to be my case -- a few beer tokens going your way if this does it

Russiamen said:
the problem is that you have the phone rebooted to twrp ,but the screen is black and seems adb
1.Wait for 5 to 10 minutes until the phone goes into twrp
2.You can check the "back"button if it vibrates,then you are on the right track
3.To find adb sideload ,I personally enjoyed another device to see where it is
4.Further connected to the computer and write
Adb kill-server
Adb usb
Adb devices(if written sideload means you entered)
And the team flash a Rom (better than the usual stock(not twrp))adb sideload rom name.zip rom name=the name of your .zip)(if you finish early,it's nothing)
5.Further prescription adb reboot
6.Your phone reboots and then you'll be able to go to fastboot by holding the+button to zoom.volume
7.Then fastboot flash a greenshank sorg
And oops,there bootanimation and logo asus
Go into Rom and enjoy,if you want then reboot
8.in fastboot And flash twrp:
Adb kill-server
Fastboot flash recovery recovery.img
9.Next, choose Twrp in fastboot.And rejoice
Tested in Z008 and Z00AOk so
P. s This is how I coped with such a problem
PS.s In twrp ,the device may be blocked,if it was there,you4 just have to swapnote from left to right to unlock the device
PS.s.IMPORTANT: after upgrading, even with a clean 184, then make a full reset in the settings, after a couple of minutes you may find that your phone becomes unresponsive, but it isn't! After a couple of minutes it reboot in recovery and do factory reset! After that, missing a sufficient number of bugs ranging from drop google services, and what's not sincenot contacts, not the arrival notification and so on.
Click to expand...
Click to collapse
In Step 4, Can i flash the stock lp rom? Will it work?

Ravi Kumawat said:
In Step 4, Can i flash the stock lp rom? Will it work?
Click to expand...
Click to collapse
Yes

Can I downgrade to lollipop with this method?
If yes, I think you should make a new thread how to downgrade from Marshallow to lollipop, some people want to downgrade but they don't know how to do it.
Sent from my ASUS_Z00AD using XDA-Developers mobile app

BesFen said:
Can I downgrade to lollipop with this method?
If yes, I think you should make a new thread how to downgrade from Marshallow to lollipop, some people want to downgrade but they don't know how to do it.
Sent from my ASUS_Z00AD using XDA-Developers mobile app
Click to expand...
Click to collapse
No,use AsusFlashTool and Raw stock rom

I'm unable to understand your english ;-;
I'm stuck with the same problem. I originally had a ResurrectionRemix rom running on my Zenfone and then tried to flash one of the stock Marshmallow roms provided by Asus.

Related

Unable to root using Nexus Root Toolkit 2.1.0 and Nexus Player Marshmallow MRA58N

I am having a difficult time rooting my Nexus Player on Marshmallow 6.0 MRA58N
I select the "Root" option and it pushes 3 files to my Nexus Player. Then it boots into TWRP and I plug in my mouse so I can flash:
-beta-supersu-v2.52.zip and
-busybox-signed
Then I reboot system but that's when I get the stuck logo.
I flash the provided files in recovery and then I reboot. However, when I reboot, I just see the animated logo (the one with the balls bouncing from left to right). It is stuck there. What am I doing wrong?
Same problem here, someone help plez.
I haven't even been able to get ADB or Fastboot to detect my NP.
fastboot flash in bootloader (do it manually) and heres all the stuff you will use/need:
http://forum.xda-developers.com/nexus-player/orig-development/marshmallow-mra58n-root-t3256647
I would recommend flashing PureNexus rom if your rooting. Million times better then stock, in my opinion. Its MM and pre rooted too. If your up for that, check it here:
http://forum.xda-developers.com/nexus-player/development/rom-pure-nexus-t3260232
I am unable to sideload PureNexus.
dfl said:
fastboot flash in bootloader (do it manually) and heres all the stuff you will use/need:
http://forum.xda-developers.com/nexus-player/orig-development/marshmallow-mra58n-root-t3256647
I would recommend flashing PureNexus rom if your rooting. Million times better then stock, in my opinion. Its MM and pre rooted too. If your up for that, check it here:
http://forum.xda-developers.com/nexus-player/development/rom-pure-nexus-t3260232
Click to expand...
Click to collapse
Hi I have tried to sideload to PureNexus using the instructions from http://forum.xda-developers.com/nexus-player/development/rom-pure-nexus-t3260232
I am receiving Footer is wrong and Signature validation failure errors.
Unlock your bootloader using fastboot. (fastboot oem unlock)
Flash PureNexus recovery. (fastboot flash recovery "purenexus_fugu_recovery-112515.img")
Reboot Bootloader (fastboot reboot bootloader)
Once in bootloader short press bottom button once until you see recovery option then long press the bottom button.
Once in recovery short press until you get to ADB then long press to get to the ADB sideload screen.
Sideload Rom (adb sideload pure_nexus_fugu-6.0-2015xxxx.zip) where xxxx is the date of the rom you are flashing..THIS IS WHERE I RECEIVE ERROR.
Sideload Gapps (adb sideload purenexus-gapps-mm-x86-leanback-20151202-signed.zip)
Short press until you get to Wipe data/factory Reset then long press (Clears data & cache)
Select reboot now
Once booted setup everything including Kodi
Then go back to recovery and sideload Kodi Mapping zip file. (adb sideload NexusPlayer-kodi-keymap-streaming-fix-signed.zip
Can you please help?
My Nexus Player just upgraded to Android 6.0 using the instructions from, http://forum.xda-developers.com/nexus-player/general/guide-nexus-player-how-to-unlock-t2961989.
Thanks...
dfl said:
fastboot flash in bootloader (do it manually) and heres all the stuff you will use/need:
http://forum.xda-developers.com/nexus-player/orig-development/marshmallow-mra58n-root-t3256647
I would recommend flashing PureNexus rom if your rooting. Million times better then stock, in my opinion. Its MM and pre rooted too. If your up for that, check it here:
http://forum.xda-developers.com/nexus-player/development/rom-pure-nexus-t3260232
Click to expand...
Click to collapse
I installed PureNexus as well, it's pretty nice. I lost adb debugging though, can't get adb to detect the nexus player unless I boot into recovery oddly.

Rooted with twrp and supersu,not able to boot into system,infinite loop while booting

Hi friends, i have followed instructions as per youtube video (official oneplus),struck on rebooting ..now i am able to fastboot,twrp recovery menu,have backed up using twrp backup.But not able to reboot to system.The boot logo after one plus symbol kept on rotating infinitely.Please help me.
Do a factory reset
Sent from my ONE A2005 using Tapatalk
My phone is not getting power on,though i have done factory reset from twrp 3.000 recovery.Still no go struck in boot menu with rotating logo after 1+ symbol..
Hello . Firstly try get your phone into fastboot mode. Once you have get up adb. (if you don't have adb, or find it really confusing to install, get wugfreshs root tool kit has built in adb terminal)
Open up your terminal plug in your phone and type
Code:
fastboot devices
Something should come up .
Once you done that grab the latest twrp for your device. Then FLASH! AAHHHHHHH, PROTECTOR OF THE UNIVERSE. In fastboot
Code:
fastboot flash recovery twrp.img
Once that's done type
Code:
fastboot boot recovery twrp.img
The it should boot into recovery from. Here your computer should recognize your device . You should be able to easily drag and drop a new rom and gaps on to your device
---------- Post added at 08:52 AM ---------- Previous post was at 08:50 AM ----------
Brandon Indar said:
Do a factory reset
Click to expand...
Click to collapse
Also factory reset only works on a rom level. So if roms wrong. It won't do anything
So, I had the same problem and here is my fix for it.
I am not sure, but I think you will lost all your data on this way :/
You can Skip the first 2 lines, because when you installed TWRP you already done this
1. Go to a Computer and install Adb
2. Download Minimal Adb and Fastboot
3. Download the offical Rom on the OP2 Site and copy the .zip file into the Fastboot folder
4. Rename the .zip into rom.zip
5.Connect your phone to the Computer
6. Start into Twrp, go to advanced, click on adb Sideload
6. Now go to your computer, into the Fastboot Folder and start the command line and type: adb sideload /path/to/rom.zip
7. It should now take some minutes to install the Rom, you will see how many percentages on the Screen (It will only show until 50%, don't worry about that)
8. Voila, your Phone should now work again
To root it again, there are some modified UpdateSu-Files specially for your current Rom.Version. When you are on 3.5.6 you can use the attached file

[OP5, encrypted] Open Beta 3 broke my display!

Tried to flash OB3 and SuperSu on my encrypted OP5 with TWRP. Was stuck at OP logo.
Tried to go back to stable Oreo build for OP5. Again, was stuck at OP logo.
Now the screen is unresponsive in TWRP (can't even swipe to allow modifications on the first screen!).
If I install stock recovery, I can navigate recovery with buttons. I tried installing OOS 5 with stock recovery from internal storage. It doesn't work. I tried to adb sideload. The computer throws a bad_alloc error.
Anyone in the same boat, or good enough to advice?
pentruexperiment said:
Tried to flash OB3 and SuperSu on my encrypted OP5 with TWRP. Was stuck at OP logo.
Tried to go back to stable Oreo build for OP5. Again, was stuck at OP logo.
Now the screen is unresponsive in TWRP (can't even swipe to allow modifications on the first screen!).
If I install stock recovery, I can navigate recovery with buttons. I tried installing OOS 5 with stock recovery from internal storage. It doesn't work. I tried to adb sideload. The computer throws a bad_alloc error.
Anyone in the same boat, or good enough to advice?
Click to expand...
Click to collapse
but u'll lost your data
i had this too, you need to flash stock recovery from cmd in yor pc by:
"fastboot flash recovery recovery_name.img"
then wipe everything,
reboot again into recovery
click on adb
and then download the stable firmware oreo 5
in adb mode with stock recovery put firmware in the same folder
and input - adb sideload name_of_firmware.zip
That fixed my phone, i'll hope and yours will be fixed
sk.c0de said:
but u'll lost your data
i had this too, you need to flash stock recovery from cmd in yor pc by:
"fastboot flash recovery recovery_name.img"
then wipe everything,
reboot again into recovery
click on adb
and then download the stable firmware oreo 5
in adb mode with stock recovery put firmware in the same folder
and input - adb sideload name_of_firmware.zip
That fixed my phone, i'll hope and yours will be fixed
Click to expand...
Click to collapse
Thanks,
The device is recognized well by the computer (when I write 'adb devices'). But when I try to sideload ('adb sideload OOS5.zip'), it gives me an error with bad_alloc. any ideas?
pentruexperiment said:
Thanks,
The device is recognized well by the computer (when I write 'adb devices'). But when I try to sideload ('adb sideload OOS5.zip'), it gives me an error with bad_alloc. any ideas?
Click to expand...
Click to collapse
Try unbrick method I think it's the quickest way to get back your device.

Help please can't see my phone in adb

I've had my Essential two weeks i was on 8.1 beta.Today i unlocked the boot loader.Then installed twrp while in twrp i side loaded magisk.I went back to fastboot then hit start .The phone just went into a bootloop.I Was able to go back to twrp 2 times but now i can't get back to any type of recovery.I Can get back to fastboot mode ishow all the info and secure boot says yes and device state unlocked.My pc see essential phone fastboot in the device manager but i can't get adb to see it .Can anyone help me ?
forgot something
looks like i skipped this part . Once you're in TWRP, install the stock boot image and then the Magisk/SuperSU zip.Is there anything i can do?
videodave1 said:
I've had my Essential two weeks i was on 8.1 beta.Today i unlocked the boot loader.Then installed twrp while in twrp i side loaded magisk.I went back to fastboot then hit start .The phone just went into a bootloop.I Was able to go back to twrp 2 times but now i can't get back to any type of recovery.I Can get back to fastboot mode ishow all the info and secure boot says yes and device state unlocked.My pc see essential phone fastboot in the device manager but i can't get adb to see it .Can anyone help me ?
Click to expand...
Click to collapse
adb only works while phone is booted into system so nothing wrong there. If you're in the bootloader menu where you see that the status of your device is unlocked then you're already in fastboot mode. Just flash twrp again and the sideload stock 8.1 beta boot image (you can probably find it on xda), sideload magisk too. Go into install and press flash image file and find the stock boot image and then go into install again and change to flash .zip and flash magisk. After that, reboot into system.
WOW thank you so much'
Arju said:
adb only works while phone is booted into system so nothing wrong there. If you're in the bootloader menu where you see that the status of your device is unlocked then you're already in fastboot mode. Just flash twrp again and the sideload stock 8.1 beta boot image (you can probably find it on xda), sideload magisk too. Go into install and press flash image file and find the stock boot image and then go into install again and change to flash .zip and flash magisk. After that, reboot into system.
Click to expand...
Click to collapse
I was able to flash twrp i'll try the rest when i get home from work
sideloading stock img
videodave1 said:
I was able to flash twrp i'll try the rest when i get home from work
Click to expand...
Click to collapse
Do i need it to be zipped I've tried it as image that i downloaded from xda and I've tried a zip i got from Essential neither are working?
zip file
videodave1 said:
Do i need it to be zipped I've tried it as image that i downloaded from xda and I've tried a zip i got from Essential neither are working?
Click to expand...
Click to collapse
When i try i get invalid file format. This is using a zip i got from Essential.
Stuck twrp says no os installed . But i did learn how to push files.
just trying to get back to stock now 
videodave1 said:
just trying to get back to stock now 
Click to expand...
Click to collapse
https://forum.xda-developers.com/essential-phone/development/stock-7-1-1-nmj20d-t3701681
thanks been there tried the Oreo beta that is what i was on when i started and tried the 1st build before the betas i get an error on both i'll try to download them on another pc my phone does show up when i type fastboot devices now just need an os now .
Okay got back to 8.1 bootloader still unlocked twrp not install and i don't have root.I may just wait until P comes out.I'll try and learn more about adb. Thanks for your help Arju.
thanks everyone.
videodave1 said:
Okay got back to 8.1 bootloader still unlocked twrp not install and i don't have root.I may just wait until P comes out.I'll try and learn more about adb. Thanks for your help Arju.
Click to expand...
Click to collapse
No problem. Thank you very much for the donation, that was really kind of you. Hey I'm sure you'll get the hang of it before android P drops. you did figure out what went wrong all by yourself so get a hold of the right boot.img and the rest is exactly as how you did it in the first place but flash the boot.img before magisk. Let me know if you want to give it a dive again.
I'm on 8.1 boot loader unlocked and ready to try to root again .Thanks for the help
This is the closest thread i could find to what is happening to my PH-1.
Like videodave1 I 'was' running the latest stock 8.1 and have my bootloader unlocked. In trying to root the phone I did this:
flash boot flash boot twrp.img
adb shell twrp sideload
adb sideload magisk.zip
All installations went well, but when trying to reboot from twrp it forced me to install the app. After that the phone went into boot loop.
* Note how I didn't sideloaded the Oreo 8.1 image before magisk.
By pressing all 3 buttons I can get the phone to reboot and releasing the volume up I can get to Fastboot. Just volume down and power doesn't work.
The problem now is that adb and fastboot no longer recognise the phone. adb devices just gives an empty list and fastboot only shows < waiting for device >
Trying to go into Recovery mode doesn't work either. Power off doesn't work and Restart bootloader, well, restarts the bootloader.
It might be relevant to mention that I'm running adb and fastboot from Terminal in a Mac and that this is my very first and frustrated attempt to root any phone.
For reference this is what the FastBoot Mode brings:
PRODUCT_NAME - Mata
VARIANT - OPENUS
BOOTLOADER VERSION - mata-aad8ac4
BASEBAND VERSION - 2.0.C4-M1.3.1
SECURE BOOT - yes
DEVICE STATE - unlocked
I might have to just resign myself to the ordinary land of unlocked full stock phones
Thanks very much
avocom said:
This is the closest thread i could find to what is happening to my PH-1.
Like videodave1 I 'was' running the latest stock 8.1 and have my bootloader unlocked. In trying to root the phone I did this:
flash boot flash boot twrp.img
adb shell twrp sideload
adb sideload magisk.zip
All installations went well, but when trying to reboot from twrp it forced me to install the app. After that the phone went into boot loop.
* Note how I didn't sideloaded the Oreo 8.1 image before magisk.
By pressing all 3 buttons I can get the phone to reboot and releasing the volume up I can get to Fastboot. Just volume down and power doesn't work.
The problem now is that adb and fastboot no longer recognise the phone. adb devices just gives an empty list and fastboot only shows < waiting for device >
Trying to go into Recovery mode doesn't work either. Power off doesn't work and Restart bootloader, well, restarts the bootloader.
It might be relevant to mention that I'm running adb and fastboot from Terminal in a Mac and that this is my very first and frustrated attempt to root any phone.
For reference this is what the FastBoot Mode brings:
PRODUCT_NAME - Mata
VARIANT - OPENUS
BOOTLOADER VERSION - mata-aad8ac4
BASEBAND VERSION - 2.0.C4-M1.3.1
SECURE BOOT - yes
DEVICE STATE - unlocked
I might have to just resign myself to the ordinary land of unlocked full stock phones
Thanks very much
Click to expand...
Click to collapse
Even though your phone does not show up its there wipe everything.Fallow what Arju said in his post.I got back to stock then took the 8.1 update i'm not rooted but my bootloader is still unlocked.Oh make sure you unlock critical
videodave1 said:
Fallow what Arju said in his post.
Click to expand...
Click to collapse
Thanks for coming back to me. I really appreciate it.
Arju said:
Just flash twrp again and the sideload stock 8.1 beta boot image (you can probably find it on xda), sideload magisk too.
Click to expand...
Click to collapse
I might be missing something hopefully obvious here. How can I flash twrp again if I my computer can't see the phone. With the USB phone plugged in and in the FastBoot screen I enter into Terminal:
fastboot flash boot twrp.img
and I get:
< waiting for any device >
How do I flash it from the FastBoot screen? BTW, going to Recovery mode just hangs at the Essential logo.
Thanks
avocom said:
Thanks for coming back to me. I really appreciate it.
I might be missing something hopefully obvious here. How can I flash twrp again if I my computer can't see the phone. With the USB phone plugged in and in the FastBoot screen I enter into Terminal:
fastboot flash boot twrp.img
and I get:
< waiting for any device >
How do I flash it from the FastBoot screen? BTW, going to Recovery mode just hangs at the Essential logo.
Thanks
Click to expand...
Click to collapse
are you able to get to the bootloader menu? where it says start on the top.
Arju said:
are you able to get to the bootloader menu? where it says start on the top.
Click to expand...
Click to collapse
Thanks Arju. If you are referring to the FastBoot menu where you can use the up and down volume keys to select Start, Restart Bootloader, Recovery mode and Power off Yes, but not much else unfortunately.
If I select Recovery mode I don't go to the screen with the blue buttons from twrp.
Thanks
avocom said:
Thanks Arju. If you are referring to the FastBoot menu where you can use the up and down volume keys to select Start, Restart Bootloader, Recovery mode and Power off Yes, but not much else unfortunately.
If I select Recovery mode I don't go to the screen with the blue buttons from twrp.
Thanks
Click to expand...
Click to collapse
What you need to understand is that twrp will not stick after you flash it. This device does not have a recovery partition and that's why you replace the boot partition with twrp and while you're in twrp you need to flash the boot.img back and whatever mods on top of that such as kernel etc.. If you flash a rom then it will replace the twrp with the boot.img found in the rom zip.
So now we need the computer to recognize you device. Could you unplug the cable and change the usb port on you computer. connect your phone while you're in the bootloader menu where it says start on the top.
The use use fastboot command: fastboot devices
See if the computer recognizes you device.

Google Pixel 3a (sargo) brick - error boot prepare

Hi,
Today I wanted change my recovery. I had the Lineage OS recovery, but i was trying to install the twrp recovery.
So, the guide of twrp says that you should boot the twrp via fastboot boot twrp.img and install via the booted twrp. But I mistaken the command and I wrote fastboot flash boot twrp.img, I tried to reboot and the device booted himself in fastboot with the enter reason "error boot prepare" and I can't boot into the system or recovery.
I tried to flash the official image downloaded from the Google Developers website, but when i run ./flash-all.sh, console get stuck. I waited for about 15 minutes but nothing. I tried even the official Android Flash Tool but after 10 seconds it says "Your device stopped responding. You may have to select restart in the bootloader menu in order for it to be recognised again."
Does anyone know how to help me? Thanks in advance.
GioPan_ said:
Hi,
Today I wanted change my recovery. I had the Lineage OS recovery, but i was trying to install the twrp recovery.
So, the guide of twrp says that you should boot the twrp via fastboot boot twrp.img and install via the booted twrp. But I mistaken the command and I wrote fastboot flash boot twrp.img, I tried to reboot and the device booted himself in fastboot with the enter reason "error boot prepare" and I can't boot into the system or recovery.
I tried to flash the official image downloaded from the Google Developers website, but when i run ./flash-all.sh, console get stuck. I waited for about 15 minutes but nothing. I tried even the official Android Flash Tool but after 10 seconds it says "Your device stopped responding. You may have to select restart in the bootloader menu in order for it to be recognised again."
Does anyone know how to help me? Thanks in advance.
Click to expand...
Click to collapse
Do you have tryied to run the official google tool in Windows to try to rescue it?
Estebiu said:
Do you have tryied to run the official google tool in Windows to try to rescue it?
Click to expand...
Click to collapse
Yes, I wrote in the post, I tried both the command line tool and the chrome version. Btw i'm on linux
Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)
GioPan_ said:
Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)
Click to expand...
Click to collapse
I'll try this...
GioPan_ said:
Okay so, I fixed.
For anyone who will have this problem you just need to flash official Android 9 and next Android 10. Only with Android 10 you can use fastboot flash boot recovery.img (you can't use twrp in android 10 with the Pixel 3a)
Click to expand...
Click to collapse
Does this work if adb not working? I only have fastboot.
WriteLovey said:
Does this work if adb not working? I only have fastboot.
Click to expand...
Click to collapse
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.
GioPan_ said:
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.
Click to expand...
Click to collapse
I'm not certain I understand what you mean by PC authorized? I'm using a Windows 10 tablet. When the phone is attached to the computer it sees it as a device that can be disconnected through USB.
WriteLovey said:
I'm not certain I understand what you mean by PC authorized? I'm using a Windows 10 tablet. When the phone is attached to the computer it sees it as a device that can be disconnected through USB.
Click to expand...
Click to collapse
All is well. I'm back on my Pixel, yeah!
GioPan_ said:
It depends if your pc were authorized, if it was, you can use fastboot to flash the stock version of Android 9, just running the flash-all(.bat) script.
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I just had an encounter with this. I was rooting my device (Pixel 3A) and messed up my partitions through accidentally attempting a downgrade which broke all my ****. I was unable to easily reset this device to factory, so it took me several days to figure out and root. I'm getting better though as a hacker, because a year ago this would have taken me a month.
I was able to enter recovery mode (lying down Android, NO COMMAND). From this recovery mode, adb devices -l recognized my device, although I was unable to get a shell.
At first, ADB was telling me the device was authorized, but I messed with a bunch of other stuff (tried to flash a bunch of different partitions and monkey around in general trying to install Magisk) and then ADB started telling me it wasn't authorized when I used devices -l.
Once it said unauthorized, I was unable to issue the device any commands with ADB, so I just used hardware keys to get into recovery mode. From there, I selected OTA update, and it got into sideload mode. At that point, I used adb sideload with the OTA package that I downloaded here https://developers.google.com/android/ota
^^^ That operation did successfully restore my device to factory
This following guide here describes the details of how to use hard keys to enter recovery on this phone (don't download anything from there tho, and make sure your adblock is on)
How to Hard Reset your new Google Pixel 3a [Tutorial]
In this article, you will learn how to start your Google Pixel 3a up into the Recovery Mode and perform the Hard Reset to make it work perfectly again.
thedroidguy.com
I just wanted to say, I've been wrestling this hardbrick for a couple of days with my Pixel 3a.
I've finally overcome it by sideloading the most recent OTA update after using a hard key combo to get into recovery mode. The hard key combo is hold Power Button, tap Volume Up, then release both. Then, all you need is to use the command:
adb sideload <OTA.zip>
^^^OTA wasn't the actual filename though, you can download OTA packages for Pixel 3A here: https://developers.google.com/android/ota
the OTA binaries are NOT the same as the factory images, which is here
Factory Images for Nexus and Pixel Devices | Google Play services | Google for Developers
developers.google.com
Sideloading the OTA package brought my phone back from only having fastboot and recovery mode, even when flash-all.sh from the official downloaded firmware failed. Now I know how to undo damage that I cause by rooting this thing. Since I sideloaded newest firmware, it was also like applying an update. I easily got root after that, and I've logged the process. I'll make it into a guide soon
I'll just note that if you accidentally flashed the TWRP boot image instead of simply booting into it, I believe all you have to do is flash the stock boot.img to fix the problem. Obviously you can sideload the entire rom image, but that shouldn't be necessary.
Using the Windows computer (or whatever computer you are sending ADB commands from), download the full stock image directly from Google. Unzip it and then upzip the folder inside. You should find the boot.img file inside that folder. Take that file and then flash it to the phone using the normal ADB command: fastboot flash boot boot.img
While I haven't tried this myself recently, it should work in theory. The command "fastboot flash boot twrp.img" flashes the boot partition with a non-working twrp image, so replacing the faulty image with the stock boot.img should fix the problem.
If I did the same I would first attempt to manually put device in bootloader/aka fastboot mode then fastboot flash the stock boot.img , sudo fastboot flash boot boot.img --slot all
I only read the op (first post here);but I betcha that would have worked. Then sudo ./flash-all.sh and let it do it's thing.

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