Database Users

A little help please...

I have the US version of the ZTE Axon 7 running the B29 build.
I recently unlocked the bootloader successfully, When I flashed the TWRP recovery via fastboot soon after, it worked perfectly. Phone booted properly and worked normally. When I tried to install the TWRP app in the OS, I was told to download the latest TWRP version from the website and flash it (even though I had the latest version already flashed from fastboot). I did that. Now I have no recovery menu at all. I have access to the bootloader menu, and I can boot into the phone. When I try to boot into recovery, all I get is a black screen. I tried to reflash the TWRP recovery img from fastboot like I did originally with no success this time. Fastboot recognizes the phone when I type devices, but when I type the fastboot command to flash recovery twrp.img, it says it can't load the file. I then downloaded the ZTE stock recovery img and tried to flash that with the same result. I assume the recovery partition is locked somehow now? What can I do to recover the recovery? Am I stupidly forgetting something trivial.

hello, this happened to me once on a Nexus 7, I did a clear cache/wipe and restore I think, I got it to work.
Not sure if this will solve your issue but you can give it a shot...
good luck

I would never flash a recovery from an app unless there was no other option. Use tennear/tenfar tool to flash twrp.

lafester said:
I would never flash a recovery from an app unless there was no other option. Use tennear/tenfar tool to flash twrp.
Click to expand...
Click to collapse
yeah. live and learn. too late to help at this point. I'll try the tool you suggested

Bucci83 said:
hello, this happened to me once on a Nexus 7, I did a clear cache/wipe and restore I think, I got it to work.
Not sure if this will solve your issue but you can give it a shot...
good luck
Click to expand...
Click to collapse
Thanks for your suggestion. I cant wipe/flash/ recover/or even reset to factory because I have no recovery menu at all. Unless there's a way to do that outside of the recovery boot menu.
At least it's not bricked.

[email protected] said:
Thanks for your suggestion. I cant wipe/flash/ recover/or even reset to factory because I have no recovery menu at all. Unless there's a way to do that outside of the recovery boot menu.
At least it's not bricked.
Click to expand...
Click to collapse
I think he means go to fadtboot and do fastboot clear cache or something like that, Google fastboot cache clear command

Please help! ZTE Axon 7 won't boot after deleting Lineage and TRWP

Hi,
don't know if this problem has already occurred before.
I had lineage and TRWP installed on my Axon 7 (EU version) and wanted to go back to the stock a2017g.
Therefore I deleted the ROM and wiped everything with TWRP.
Then I deleted TWRP and now i'm stuck at the the bootloader (which is unlocked), but TWRP seems to be gone.
The main problem is, whenever I try to flash a new stock rom (via recovery), I get the error "signature verification failed" and the process is aborted with no change to the system whatsoever.
Is there anything I can do at this point or is my phone practically dead?
Thanks in advance for any help.

tempest89 said:
Hi,
don't know if this problem has already occurred before.
I had lineage and TRWP installed on my Axon 7 (EU version) and wanted to go back to the stock a2017g.
Therefore I deleted the ROM and wiped everything with TWRP.
Then I deleted TWRP and now i'm stuck at the the bootloader (which is unlocked), but TWRP seems to be gone.
The main problem is, whenever I try to flash a new stock rom (via recovery), I get the error "signature verification failed" and the process is aborted with no change to the system whatsoever.
Is there anything I can do at this point or is my phone practically dead?
Thanks in advance for any help.
Click to expand...
Click to collapse
Try to boot into bootloader interface, and issue command "fastboot flash recovery TWRP.img" on your computer( the current working directory should contain the TWRP.img file) . If your bootloader is unlocked, you should see no error of this command. Then press up/down button to select recovery mode. You should see the familiar TWRP again. Good luck!

tempest89 said:
Hi,
don't know if this problem has already occurred before.
I had lineage and TRWP installed on my Axon 7 (EU version) and wanted to go back to the stock a2017g.
Therefore I deleted the ROM and wiped everything with TWRP.
Then I deleted TWRP and now i'm stuck at the the bootloader (which is unlocked), but TWRP seems to be gone.
The main problem is, whenever I try to flash a new stock rom (via recovery), I get the error "signature verification failed" and the process is aborted with no change to the system whatsoever.
Is there anything I can do at this point or is my phone practically dead?
Thanks in advance for any help.
Click to expand...
Click to collapse
Did you try flashing an official full zip, like B10? That's another thing you can try, since you're going to lose TWRP after you flash a stock rom anyways

If you dont have recovery, flash it from edl mode, you can flash twrp or stock.
Once you install it, performa a full wipe from stock recovery, and flash a full zip.
I have similar problems, I dont loose recovery, but stock dont boot after coming back from aosp, a factory reset did the job. I think is because different filesystems in data partition

Choose an username... said:
Did you try flashing an official full zip, like B10? That's another thing you can try, since you're going to lose TWRP after you flash a stock rom anyways
Click to expand...
Click to collapse
Hi, the B10 ROM from the ZTE homepage did the trick.
Worked out nicely.
Thank you so much.
One final question remains for myself: How can I relock the bootloader (so that the 5 second screen won't show up at the start).
Tried different ways with adb and fastload, but nothing seemed to have an effect here.
So what to do?
Thank you again for your help.

tempest89 said:
Hi, the B10 ROM from the ZTE homepage did the trick.
Worked out nicely.
Thank you so much.
One final question remains for myself: How can I relock the bootloader (so that the 5 second screen won't show up at the start).
Tried different ways with adb and fastload, but nothing seemed to have an effect here.
So what to do?
Thank you again for your help.
Click to expand...
Click to collapse
you shouldn't. Fastboot should do the trick, by doing fastboot oem lock, but many people reported bricking and bad stuff...
Actually that screen comes very handy in case of a brick or if you want to enter a specific mode.l, you just select the mode and voila
Do you have fastboot? I don't know if B10 still has it, but 7.0 hasn't got it

Choose an username... said:
you shouldn't. Fastboot should do the trick, by doing fastboot oem lock, but many people reported bricking and bad stuff...
Actually that screen comes very handy in case of a brick or if you want to enter a specific mode.l, you just select the mode and voila
Do you have fastboot? I don't know if B10 still has it, but 7.0 hasn't got it
Click to expand...
Click to collapse
Hi,
I tried adb and fastboot via pc and with the axon toolkit.
The adb worked fine, but no sign of effect by the fastboot commands.
So I guess I don't have it.
Is there any other solution to at least bypass the 5 second screen?
Thanks

tempest89 said:
Hi,
I tried adb and fastboot via pc and with the axon toolkit.
The adb worked fine, but no sign of effect by the fastboot commands.
So I guess I don't have it.
Is there any other solution to at least bypass the 5 second screen?
Thanks
Click to expand...
Click to collapse
Lol fastboot is not something like EDL, it looks similar to the 5 sec screen...
When you get the 5 sec screen, use the vol keys and pwr to get to the Fastboot option and enter - it should reboot and get to fastboot after some time
You should look up what fastboot, EDL, ADB and DFU are before doing all this stuff - you can mess up badly, and by not knowing you're complicating everything - my explanation and your understanding

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.

re-installing stock recovery on Nexus 6P

I installed TWRP custom recovery on my Nexus 6P. I was able to boot into it ONCE. When i next tried to enter Recovery, i get a screen showing the Android Robot and the following statement: NO COMMAND
I tried to re-install TWRP using adb twice, but the result is the same.
How can i either fix TWRP, or re-install the stock recovery
I am basically a beginner here, so any help would be appreciated

If you installed the stock system image and then booted into it, it likely automatically reinstalled stock recovery also. I don't know why it does that, but it does. This is why I usually just reinstall TWRP again after each monthly update is completed.
You should use fastboot to install the images, not adb. The command should look like:
fastboot flash recovery twrp.img

I think i just worded it wrong - I used the above command (fastboot flash recovery twrp.img) to install twrp, and then, when i couldn't get back into recovery (Power - Volume Up combo just lest to screen that stated "No Command".), i used the fastboot flash recovery twrp.imp twice to try to re-install TWRP, but it didn't work
I also downloaded the latest stock Oreo ROM, copied the recovery.img file, and used fastboot.flash.recovery.img to try to re-install the stock recovery, but that didn't work either
The once time that TWRP work, it asked it I wanted to use TWRP is read only, to twice i selected NO (don't know if this matters)
Any other suggestions to fix TWPR, or re-install the stock recovery image???

When you say it didn't work, can you expand on that? Was there an error or anything?

hmodiano said:
I think i just worded it wrong - I used the above command (fastboot flash recovery twrp.img) to install twrp, and then, when i couldn't get back into recovery (Power - Volume Up combo just lest to screen that stated "No Command".), i used the fastboot flash recovery twrp.imp twice to try to re-install TWRP, but it didn't work
I also downloaded the latest stock Oreo ROM, copied the recovery.img file, and used fastboot.flash.recovery.img to try to re-install the stock recovery, but that didn't work either
The once time that TWRP work, it asked it I wanted to use TWRP is read only, to twice i selected NO (don't know if this matters)
Any other suggestions to fix TWPR, or re-install the stock recovery image???
Click to expand...
Click to collapse
If you want TWRP to stick, you need to flash either SuperSU or magisk. The Android with the exclamation mark is what stock recovery looks like.
Once you have TWRP installed and wish to keep it, you don't need to flash stock recovery in the monthly update. Just boot into TWRP after flashing update and root again.

chaoticyeshua said:
When you say it didn't work, can you expand on that? Was there an error or anything?
Click to expand...
Click to collapse
When the phone is turned on, it never progresses beyond the first screen. No error codes, it just does not proceed to boot up.
I had to buy a new phone (need it for business, but i given up on trying to install Resurrection Remix on the Nexus 6P, which was the reason I was trying to install TWPR and SuperSU. So far, I have only accomplished turning the phone into a brick door stop!!!

hmodiano said:
When the phone is turned on, it never progresses beyond the first screen. No error codes, it just does not proceed to boot up.
I had to buy a new phone (need it for business, but i given up on trying to install Resurrection Remix on the Nexus 6P, which was the reason I was trying to install TWPR and SuperSU. So far, I have only accomplished turning the phone into a brick door stop!!!
Click to expand...
Click to collapse
Use Magisk it's the better solution for root. Never had boot up issues with it just stock you have to boot once through before flashing. Custom ROMs you can flash right away.

Phone bricked?

Hello. I flashed TWRP and then LineageOS onto my Mi 9T. I didn't like it too much so I started downloading the global rom. In preparations to reflash the stock rom, I wiped the phone from TWRP and then turned the phone off until it was completed downloading. I was planning to install the ROM through OTG, but when I tried to go into recovery, nothing happens and I go back to boot screen. I tried reflashing TWRP with adb, but it seems I forgot to turn USB debugging back on when I was transferring files. What can I do now? Is my phone bricked?

No it's not bricked.
Just flash fastboot rom and then
Flash twrp again ,free to do any job

Masih_zh said:
No it's not bricked.
Just flash fastboot rom and then
Flash twrp again ,free to do any job
Click to expand...
Click to collapse
Will it still work even though USB debugging is off? Sorry I am new to this.

tagkd said:
Hello. I flashed TWRP and then LineageOS onto my Mi 9T. I didn't like it too much so I started downloading the global rom. In preparations to reflash the stock rom, I wiped the phone from TWRP and then turned the phone off until it was completed downloading. I was planning to install the ROM through OTG, but when I tried to go into recovery, nothing happens and I go back to boot screen. I tried reflashing TWRP with adb, but it seems I forgot to turn USB debugging back on when I was transferring files. What can I do now? Is my phone bricked?
Click to expand...
Click to collapse
Flash stock dtbo.img and recovery.img from fastboot

tagkd said:
Will it still work even though USB debugging is off? Sorry I am new to this.
Click to expand...
Click to collapse
The "USB debugging" you're talking about assumes there's a running OS on your system. It's not applicable here. Boot into fastboot and see if the phone is recognized. If yes, you're good. Flash twrp via fastboot then boot into recovery and go from there with removing old files and flashing new rom

Thanks for the help everyone. I found a v 10.3.6 fastboot rom and was able to get phone working again.