Unable to boot, no command - Google Pixel Questions & Answers

I was able to get TWRP installed on my Pixel and then I went to root using Chainfire's method. It seemed successful but root checker apps told me the phone was not rooted. I tried flashing everything back to stock using the latest factory image (NMF26O) from Google but now I am simply stuck with a screen with an Android robot that says no command. I tried using flash-all.bat but it fails looking for the recovery.img file. It's definitely not there, nor is it in previous images I have downloaded from Google. Any idea how I can recover at this point before going to Google?
UPDATE:
Sideloading seems to have worked.

That should be the stock recovery, just try to force reboot your device
Sent from my Pixel using Tapatalk

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[Q] HELP stuck on google screen after trying to root with superboot

I tried using superboot to root my nexus s, but ended up with having a stuck google screen upon reboot.
Is there anyway I can recover my phone to the original state. I can get into the boot screen by pressing up volume and the power button and I have downloaded an original rom; however, I don't know how to upload this rom
into the phone.
I unlocked the bootloader, and have the android SDK installed. I do have a response when I use the command "fastboot devices"
Is there any possible way to save my phone? Please help, Thanks in advance
is there a recovery image saved under the recovery option?
Hey I'm having the exact same problem as the OP.
I don't have a recovery image saved in recovery, so I tried to flash the latest CWM recovery image through adb, but the device isn't found.
My phone was rooted, then upgraded to 2.3.4, then got 2.3.6 OTA, but lost root. Tried to root with Superboot and now my phone's stuck.
How can I get my phone to work again?
ri ch said:
Hey I'm having the exact same problem as the OP.
I don't have a recovery image saved in recovery, so I tried to flash the latest CWM recovery image through adb, but the device isn't found.
My phone was rooted, then upgraded to 2.3.4, then got 2.3.6 OTA, but lost root. Tried to root with Superboot and now my phone's stuck.
How can I get my phone to work again?
Click to expand...
Click to collapse
You have to flash CWM using fastboot, not adb.
fastboot flash recovery recovery.img
Once you have the custom recovery flashed you can flash superuser in CWM to get root back or just flash one of the custom ROMs that include superuser.
Yes, I did exactly that.
I really have no idea what I'm doing so I'm extremely grateful for people who do.
Thanks
I am in the same boat as these other chaps. After installing the 2.3.6 OTA update I tried to root with Superboot and now my Nexus S just sits on the Google screen with the open padlock.
I've tried installing CWM recovery, as well as the boot.recovery.img that comes with Superboot, and it seems to install successfully. After rebooting my phone still sits on the Google screen, however.
Am I doing something wrong here (I'd previously rooted with few problems)?
EDIT: I should mention that after flashing the .img I'm trying to boot into recovery - at this point it just sits on the Google screen.
EDIT 2: Never mind, I sorted it. I tried using a different recovery.img (from this thread) and I was then able to get into recovery and restore a backup.

[Completed] Help with reinstalling bootloader

Hi.
I am relatively experienced user who has rooted and installed custom roms on samsung galaxy and HTC desire phones before.
I have now attempted to root my alcatel onetouch pixi 4 (4034X) using instructions from this thread :- https://forum.xda-developers.com/android/general/alcatel-one-touch-pixi-4-t3376597
I got as far as flashing twrp recovery and now the phone is stuck in constant reboot. I downloaded alcatels mobile upgrade tool in hopes of reflashing the stock rom but it seems to be looking for a later rom than the one I have installed and keeps telling me I have the lastest and so wont flash.
So can I recover from this at all or have I just bricked my phone? Is there a way to FORCE the mobile upgrade tool to reflash the current rom rather than looking for an upgrade?
It seems that everything except the bootloader is intact so is there another tool I can use to restore the bootloader?
Any help would be greatly appreciated.
Looks like I managed to unbrick using a combination of SP Flash tool and an SPFT rom for the 4034X I found on the internet. will now try reflashing a different recovery tool.
O.K. so I think what is happening is an issue when unlocking the bootloader and not when flashing recovery.
This is what I did:-
1. Enabled developer mode.
2. Turned on usb debugging and unlocked bootloader oem
3. Rebooted phone, plugged in cable and accepted connection authorisation.
4. From windows typed adb reboot bootloader. Went into to fastboot.
5. Typed fastboot oem unlock, Pressed volume up on phone.
At this point I was put back in fastboot but none of the buttons worked and the phone looked like it had frozen. Was It wiping data at this point? There was no indication that it was doing anything.
I removed the battery and reinserted but when I restarted I got the same boot loop problem. Had to restore stock firmware AGAIN.
Am I doing something wrong?
Update: I managed to install caliv touch recovery without unlocking the bootloader by using the same sp flash tool I used to restore the stock rom. However, I cant install root. The recovery will only let me sideload and I could only find the chainfire SU binaries for sideload (SuperSU 2.78-SR1 and superSU 2.46). Both of these seem to flash ok using adb sideload with ctr recovery but the phone hangs at the boot logo. I also had superuser-r197 (ph's sueruser) but that wouldn't sideload.
So I now have a custom recovery but still can't root
Has anyone succesfully rooted the 4034X (UK)? If so, how?
nyarlathotep_uk said:
Update: I managed to install caliv touch recovery without unlocking the bootloader by using the same sp flash tool I used to restore the stock rom. However, I cant install root. The recovery will only let me sideload and I could only find the chainfire SU binaries for sideload (SuperSU 2.78-SR1 and superSU 2.46). Both of these seem to flash ok using adb sideload with ctr recovery but the phone hangs at the boot logo. I also had superuser-r197 (ph's sueruser) but that wouldn't sideload.
So I now have a custom recovery but still can't root
Has anyone succesfully rooted the 4034X (UK)? If so, how?
Click to expand...
Click to collapse
Hi & welcome to xda-assist,
you can try to force the installation of supersu systemless by this step, chances are good that this will make it boot properly.
boot into twrp >go to the terminal > and type:
echo SYSTEMLESS=false>>/data/.supersu
Don't know if the recovery you use has this terminal option but it's very likely.
You can do additional a Google search on "force SuperSU systemless" to get more information / background information..
Good luck
Sent from my OnePlus 2 using XDA Labs
Thanks for your reply Sam.
I only read that after I had found a copy of a CM13 Rom that worked with The 4034X. I basically flashed superSU first then did a wipe, then installed the custom rom and google apps nano before downloading the supersu apk from google play and reinstalling. Now I have a rooted phone with a custom rom and am somewhat happier. The reason I wanted to root was to remove the bloatware that was taking up 1.5 GB of my already measly 2GB internal memory and this new ROM only takes up .5 GB.
I still have some pain. For example many of the Rom Toolbox Pro functions don't work and I think its because the system image seems protected and refuses to mount rw no matter what I do. Even issuing a remount command using the device name from cat /proc/mounts tells me the block device is read only. I also seem to be unable to verify if I have busybox or install it due to the same reason.
It also took me some time to work out that the boot animations weren't stored in /data/local or /system/media but to /data/system/theme.
This used to be so much easier in the days of ice cream sandwich and lollipop. Ah well!
Update:- Managed to flash busybox 1.26 using a flashable zip via adb sideload in Caliv Recovery (Caliv can't see my adopted storage for some reason).
I'm happy now! Would still like to have a rw system so I can remove some system apps I don't use but its no biggie.

Wiped everything using TWRP

Hello I've haven't done any rooting or roms since the samsung s3 days. I was attempting to root my google pixel and when I wiped the phone in the TWRP recovery I made the mistake of ticking every box meaning the phone now has no os on it at all. I tried installing a factory rom from googles site but I only get an error saying the zip is an invalid file type.
Any help would be greatly appreciated.
I think,,,and I am not sure but if you wiped everything you will have to fastboot flash stock image then re-install TWRP and go from there.
Unzip the factory ROM zip on your computer, have the latest drivers and ADB/Fastboot installed/downloaded from Google's site, connect the phone in whichever mode it has to be in (Bootloader?) I forget but the information is plenty available in various threads here, there are only a couple of options anyway, then run the Flash-All.bat or .sh, depending on what OS you're running (Windows, Linux/Mac?).
If you can connect via MTP while in TWRP (if that's not wiped as well, or if you did if you haven't booted out of TWRP), then maybe you can copy the files over to flash a ROM and vendor image, and TWRP RC1 too so you can flash it again, although I would opt for starting back from scratch with the fully stock ROM/firmware flashed from a PC myself.
Flash the factory image and remain stock until you learn how to use recovery/restore a phone.
Sent from my Pixel using Tapatalk
Run flash all from PC to get back to stock. Then do a lot of reading.
Sent from my Pixel using Tapatalk

S8+ failed TWRP install

I hope someone reads this as I'm lost for ideas. First time trying to root a device, I'm using an s8+ and somehow managed to mess up installing twrp using Odin.
Now when I try to re flash twrp it comes up with error, 'only official released binaries are allowed to be flashed'. Also I think I managed to erase the recovery program that comes with the phone as when I try to boot in recovery it now comes up with error message 'No command'.
I have reinstalled the stock firmware using Odin but that hasn't fixed anything.
Anyone got any ideas or insite into this problem. Any advice would be very appreciated as I'm so keen to discover rooting!!
Philnicolls89 said:
I hope someone reads this as I'm lost for ideas. First time trying to root a device, I'm using an s8+ and somehow managed to mess up installing twrp using Odin.
Now when I try to re flash twrp it comes up with error, 'only official released binaries are allowed to be flashed'. Also I think I managed to erase the recovery program that comes with the phone as when I try to boot in recovery it now comes up with error message 'No command'.
I have reinstalled the stock firmware using Odin but that hasn't fixed anything.
Anyone got any ideas or insite into this problem. Any advice would be very appreciated as I'm so keen to discover rooting!!
Click to expand...
Click to collapse
Seeing No command is normal, with an icon of a dead android lol, thats stock recovery, blue screen, i got that all time, but after waiting about 30 seconds and pressing the buttons, i got the mnue to pop up to reset cache, reboot phone, wipe data etc.
As for TWRP, are you flashing the correct one, dream2lte??, download the latest one, the dream2lte.img .tar file, from the TWRP official website - - https://dl.twrp.me/dream2lte/twrp-3.3.1-0-dream2lte.img.tar.html.
I had this issue trying to flash TWRP with standard odin, i had to use a modded version of odin to flash it, even prince cosmy version didnt work for me.
I have attatched the ODIN i use, its a 7zip file.
Thank you, after trying a few more things the twrp file you gave me worked. I now have a fully rooted s8!!!! Your a legend.

Nexus 6P, TWRP, Stock image, NetHunter... what could possibly go wrong?

I wanna start by saying that I tried all kinds of Googling and searching this site, and kept finding answers that are really close to my question, but not.
So I got my old Nexus 6P out, unlocked the bootloader (did that years ago for some reason but don't recall why), installed TWRP, formatted, installed stock image from Google Devs or whatever, installed TWRP again, rooted, installed SuperSU, Termux, TWRP app, and a few others to make sure that I have root (I have root), and everything was cool up to that point.
I used TWRP to make a backup at that point, flashed the NetHunter zip for my phone (Nexus 6P Angler), and now it won't boot the OS. It will stop at the bootloader. TWRP recovery still works.
When flashing the NetHunter ZIP, I got success messages. For giggles, I tried installing the NetHunter ZIP twice in a row, and the status messages indicated that it detected some components were already there, so it seems like it is installing, but just not booting.
If this were a computer, I would see if the boot config or partitions needed adjustment, but I'm not sure how to do this from TWRP.
Also, I have the phone in dev mode, usb debug mode, and have ADB and FASTBOOT installed on my computer (Linux Mint something from 2019 or 2020) and all the hardware IDs for FASTBOOT installed and both ADB and FASTBOOT seem to be working perfectly.
When I restore the backup, it takes me back to a working phone, sans NetHunter.
I really want the full install to take advantage of the custom kernel that a allows for WiFi and USB stuff.
I'm sure I'm making at least one silly mistake. Any help would be wonderful!
[email protected] said:
I wanna start by saying that I tried all kinds of Googling and searching this site, and kept finding answers that are really close to my question, but not.
So I got my old Nexus 6P out, unlocked the bootloader (did that years ago for some reason but don't recall why), installed TWRP, formatted, installed stock image from Google Devs or whatever, installed TWRP again, rooted, installed SuperSU, Termux, TWRP app, and a few others to make sure that I have root (I have root), and everything was cool up to that point.
I used TWRP to make a backup at that point, flashed the NetHunter zip for my phone (Nexus 6P Angler), and now it won't boot the OS. It will stop at the bootloader. TWRP recovery still works.
When flashing the NetHunter ZIP, I got success messages. For giggles, I tried installing the NetHunter ZIP twice in a row, and the status messages indicated that it detected some components were already there, so it seems like it is installing, but just not booting.
If this were a computer, I would see if the boot config or partitions needed adjustment, but I'm not sure how to do this from TWRP.
Also, I have the phone in dev mode, usb debug mode, and have ADB and FASTBOOT installed on my computer (Linux Mint something from 2019 or 2020) and all the hardware IDs for FASTBOOT installed and both ADB and FASTBOOT seem to be working perfectly.
When I restore the backup, it takes me back to a working phone, sans NetHunter.
I really want the full install to take advantage of the custom kernel that a allows for WiFi and USB stuff.
I'm sure I'm making at least one silly mistake. Any help would be wonderful!
Click to expand...
Click to collapse
Get rid of SuperSU and use Magisk root instead. SuperSU is old news and no longer supported. Magisk is the current and most reliable rooting method these days.
Flash the stock image, install TWRP, then flash the Magisk.zip and you'll be rooted. Then continue from there.
Sent from my SM-S767VL using Tapatalk
I formatted, installed factory image, installed TWRP, flashed Magisk, confirmed root, flashed NetHunter ZIP, same result
Droidriven said:
Get rid of SuperSU and use Magisk root instead. SuperSU is old news and no longer supported. Magisk is the current and most reliable rooting method these days.
Flash the stock image, install TWRP, then flash the Magisk.zip and you'll be rooted. Then continue from there.
Sent from my SM-S767VL using Tapatalk
Click to expand...
Click to collapse
So if anyone else is facing the same issuing of wanting to install this old(ish) software onto this old(ish) hardware, and got stuck in the same place as me, here are the three steps that I had to take to succeed that were not in official documentation:
1)When flashing the factory Android image, make sure that you are using the newest version that is supported by NetHunter. At time of writing, this is not the same as the newest version of Android.
2)Remove the -w option from the installation script
3)Be sure to install a compatible kernel from builds.nethunter.com
Thanks again to @Droidriven for the tip on using Magisk

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