[Q] NOT BOOTING HELP A noob please!! - G2 Q&A, Help & Troubleshooting

OK so phone was rooted with twrp installed. decided to update to latest ota 30b only I wiped and just flashed boot file and supersu without the actual rom. I know. now the phone goes straight into fastboot mode... I would think twrp is still installed but dont seem to be able to boot into it. I had adb and fastboot on my pc from before but havent used this in some time. if I try to open either of these the command window pops up and quickly closes.. What can I do ?.
new info: fadtboot is working in fact i have wrote a twrp recovery but still cant boot out of fastboot... adb device not listed. i reinstalled minimal adb and fastboot. help

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P9 Lite VNS-L21 won't boot into TWRP

Hello
As menitoned, my phone won't boot into TWRP, it does boot into Android 7.0 EMUI 5.0, can boot into revolutionary recovery, but no, not TWRP... Bootloader is unlocked! Please help
Are you certain it's not booting into TWRP? The reason I ask is I thought I couldn't boot into the custom recovery programme either: it kept loading EMUI, using the phone's buttons. In my case, ver.4.1.1
Have you tried booting via ADB commands? I had reloaded a stock update, then unlocked the bootloader for a second time, only find the same scenario. It wasn't until I tried rebooting with ADB that it actually loaded TWRP.
In case you aren't familiar with the commands. Install ADB Tools, then open a command window from the correct folder location, where ADB tools are installed. To check the PC recognises the device, use:
adb Devices
it should show the device's serial number {I think}. Then:
adb reboot recovery
it should reboot into recovery mode. If TWRP has been installed correctly, it should load into it. Otherwise...I don't have a clue what the issue is. All the best.

Unable to install TWRP

Hey guys, I'm at a lost here. I don't think I'm that stupid but I am following all steps from the guides to install TWRP without luck. I already managed to unlock my bootloader with Axon7Toolkit. I already certified that QUSB_Bulk driver is installed, I did it with Zadig, but when in EDL mode, even after killing adb, the axon7tool can't find it. I tried installing a zip with the toolkit but when I choose the package, the toolkit simply closes. Is that me? My phone?
Thank you!
gibawatts said:
Hey guys, I'm at a lost here. I don't think I'm that stupid but I am following all steps from the guides to install TWRP without luck. I already managed to unlock my bootloader with Axon7Toolkit. I already certified that QUSB_Bulk driver is installed, I did it with Zadig, but when in EDL mode, even after killing adb, the axon7tool can't find it. I tried installing a zip with the toolkit but when I choose the package, the toolkit simply closes. Is that me? My phone?
Thank you!
Click to expand...
Click to collapse
What software version are you on?
I was at latest nougat but I downgraded to B10
Doing it via fastboot never fails for me.
Get to fastboot put two img in adb folder (I rename it for ease of typing since I suck) rename to recovery.img
Type this cmd in adb
Fastboot flash recovery recovery.img
Reboot to recovery and root. Done deal
download 3.1.0.0 twrp into your download folder on your desktop enter fastboot into your phone open up your command prmt type fastboot devices, your phone should appear then type fastboot flash recovery then go to the twrp right click drag it into the command prmt air page and place it there. you should see the file then hit enter. It'll take like 5 seconds it's really fast then reboot t recovery. when in twrp it'll ask you to install it again say no and uncheck the to options. DONE.
After loads of stress and bangs on the table I managed to unlock, install TWRP, LOS and root. I removed every driver related to my cell phone, deleted everything I download from it and started from scratch. I installed TWRP via fastboot but wasn't able to enter recovery mode, than I mase the stupidity to lock the bootloader back and got stuck in that password screen. Then I gave another go with the toolkit, unlocked it again and, I don't know how or why, it finally booted TWRP. Now everything is OK. Glad to be back to "Nexus mode" after so many time.
Thank you!

[ZE00ED] ERROR: Cant load invalid boot image

Hey, i was trying to downgrade my phone but insted of this i think i messed it up really badly.
Exact things i did:
I used adb (adb reboot bootloader, fastboot boot stockboot.img)
and after reboot this error appeared.
I have no root on my phone. So i have stock recovery mode.
Please any magical help?
I can get into fastboot mode and android recovery, even twrp but i cant copy files from computer.

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.

Problem with fastboot.

Hello everyone.. I did a twrp flash and installed a custom kernel on my phone. Fastboot was still working at that time. But, when i rebooted to fastboot again to install gcam. My PC does not recognize my phone. It doesnt show my device.
Adb is working
fastboot not. Please help. I want to flash updates.
I currently have no twrp since the twrp.img i updated turned my recovery blank.

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