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Rooting issues - ADB unable to locate phone in fastboot

Hi everyone,
I have looked everywhere on google and have been at this for over 5 hours now. I have tried rooting my phone from 3 different PCs (XP SP3, SP2 and 7). With all of them i have managed to get the drivers for adb installed (after many problems) and got all the way to the fastboot part of the rooting.
Once i get there, i have the same problem on all 3 PCs. ADB can no longer find my phone! Following the instructions, i checked for the device before i powered it off and found it by doing abd devices in cmd prompt. The moment the device is powered off and then back on, bam! No more device!
I am at my wits end at this point and just don't know what else I could possibly do! I would be immensely grateful for ANY advice.
I did check that my device allowed USB debug so that's not it either.
Also, my phone is a Rogers phone and I have just put through the upgrade they sent this morning.

adb cant find your phone in fastboot mode but fastboot can
Try writing fastboot devices instead of adb devices
All the comands in fastboot mode start with fastboot...e.g fastboot flash xxx xxx.img

I ran into this problem as well on my attempt, I forgot to re-enable (or enable) depending on where I was at "usb debugging" which is in:
settings> applications > development > check the usb debugging box.
After that, when you do abd devices in your shell, it should surely list after that. Good luck!
edit-- woops scratch that.. sorry I just read back that you made sure of that.

Thank you for that!
Now, i see it in fastboot, but when i try typing fastboot boot recovery.img i get a "cannot load recovery.img"
Sorry, apparently i need a lot more hand holding than i though!
(this is where I am getting the instructions from HowardForums. I'd post the link but I can't do that yet on this forum...
Basically, these are the instructions i am following:
If the phone you have is an HTC Magic (no hardware keyboard), the method is pretty much the same. I modified Haykuro's zip with files that were meant for the Magic. You can grab it here:
*link*
Again, open another command prompt as steps 2, and 6-8 are entered in the command prompt.
Quote:
Originally Posted by Haykuro-ish
0. Place update.zip on SD card.
1. power off the phone and boot into fastboot (hold back and power)
2. fastboot boot recovery.img
3 [optional]. make a backup with nandroid
3. apply update. (LET IT FINISH, DO NOT TOUCH ANYTHING UNTIL YOUR PHONE IS COMPLETELY IDLE. DO NOT TOUCH AFTER FIRST REBOOT (WHEN CHIP APPEARS) UNLESS YOU LIKE A BRICK. )
4. reboot out of recovery mode.
5. power off phone, hold back button and power to boot into fastboot again
6. fastboot flash boot boot.img
7. fastboot flash recovery recovery.img
8. fastboot reboot
enjoy!
These are pretty much the Haykuro instructions for the Dream, which I modified to apply to the Magic. The boot and recovery images were made by Amon_RA. Happy Rooting!
Just like with the Dream, the first part flashes a good SPL, the second flashes a rooted boot and recovery. The easiest way to test if the device is rooted is to open another command prompt in the tools dir and type
Code:
adb root
If it returns that adb is already running in root, then you're all set.
Click to expand...
Click to collapse
Am i doing something wrong?
Thanks so much!

You need to navigate to the folder where you saved your recovery.img
For example if you put it on d:/Android dev. you will need to do (inside cmd)
d: (switches to drive d
cd d:/Android dev. (changes the folder to android dev.)
and then issue the fastboot command
without the brackets of course...

eyegor said:
You need to navigate to the folder where you saved your recovery.img
For example if you put it on d:/Android dev. you will need to do (inside cmd)
d: (switches to drive d
cd d:/Android dev. (changes the folder to android dev.)
and then issue the fastboot command
without the brackets of course...
Click to expand...
Click to collapse
Again, thank you so much! It seems I am still having issues as now I'm being told that "remote not allow".... is this a rogers thing?
Again i do apologize for all the hand-holding necessary here

yes, i am getting this <remote:not allow> message too. I was able to fix my other magic (purchased in october) via fastboot boot recovery.img but not this new one i have (purchased in Dec).
Anyone have any ideas how to bypass this block of 'remote, not allowed"?

Rooting and ClockworkMod Recovery OS X Guide

Hi all,
Saw there were no guides for ClockworkMod install on Mac. And people cool enough to have the DHD must also surely have Macs Or like hacking about enough to have a hackintosh. So anyways, I made a guide.
Rooting and s-off
I rooted using this thread here
http://forum.xda-developers.com/showthread.php?t=835746
You need to download visionary r12 and a terminal emulator, but its all explained there. Exact same process as for windows users.
Once you are rooted and have s-off, come back here.
ClockworkMod Recovery (Updated guide for [email protected] version)
1. Download the Android SDK for Mac from HERE
Extract it, then move the whole folder to the root of your main drive
e.g for me its full path is "/Snow/android-sdk-mac_x86"
2. Download the HTC fastboot binary from Here
Then extract it and move it to /xxxx/android-sdk-mac_x86/tools/
3. Download the clockwork.img from This thread
And copy it to the tools folder where you put fastboot
4. Connect your DHD to the computer in charge only mode.
5. Open Terminal.app
6. Type
Code:
cd /xxxx/android-sdk-mac_x86/tools/
Where xxxx is the name of your drive
And press enter.
If the drive where your sdk folder is located has a space in its name, you have to add a backslash before the second word.
e.g if your drive is called "Macintosh HD" the path will be:
/Macintosh \HD/android-sdk-mac_x86/tools
Alternatively, if you cant be asked typing into terminal, type cd, then a space, drag the tools folder to the terminal window, make sure it says the right path, then press enter.
7. Type
Code:
./adb devices
And press enter
Check your device is listed correctly y checking its serial number in settings on your phone with the serial number that comes up
8.Type
Code:
./adb reboot bootloader
And press enter
This should reboot your phone to bootloader, with green writing at the top, then fastboot USB in red.
9. Now type
Code:
./fastboot flash recovery clockwork.img
And press enter
If youve done it correctly, it will say
Code:
sending 'recovery' (4914 KB)... OKAY
writing 'recovery'... OKAY
10. Now use the volume buttons to navigate, and power button to select, and navigate to bootloader, then once that loads, to recovery.
Let it load and ClockworkMod will load.
Then click down through the whole menu 3 times until it says 'back menu button enabled"
This means the power button now is the select button.
You now have CM successfully installed, and can reboot, install new roms etc as you please!
No guarantee provided for this guide, if it breaks your device, blows up the computer, gets you sued by google or whatever, I am not responsible and you do all this at your own risk.
Any improvements to the guide, please say in the thread.
I am also working on a script/app to do it all on OS X with one click. Will hopefully be done once this 10 days of coursework and tests is over!
Happy Flashing and thanks to all the devs that made this possible!
Rory

excellent looking forward to the app!
mac OS x needs love from android! devs

Yeah!!!
Useful Guide! Thanks!!

Thanks!
I'm running Ubuntu and the commands are basically the same for Linux systems.
But Linux users will need to add a small file to let the OS see the Device correctly.
Follow step 3 "Setup your system to detect your device." in the guide below:
http://developer.android.com/guide/developing/device.html

Great guide!!!
but on Mac I ceep on getting a signature error??
What am i forgetting?

duanes said:
Great guide!!!
but on Mac I ceep on getting a signature error??
What am i forgetting?
Click to expand...
Click to collapse
Not sure mate, maybe look in the windows threads.
First thing I would suggest is redownload the recovery image.
At what point are you getting the signature error?

excellent i just did it..and my DHD is free!

nandihno said:
excellent i just did it..and my DHD is free!
Click to expand...
Click to collapse
Glad I could help. Will soon be expanding it for flashing kernels and ROMs using fastboot.

Thank you so much for this tutorial is very useful! If Mac users who believe that this method is difficult, can install BootCamp and run Windows natively. I use Windows 7 Ultimate under BootCamp to use the tools for Root, Downgrade, etc... (remember: for use the tools under Windows, runing under "Administrator mode" click right on mouse over the EXE file
Someone with a Mac to use Parallels Desktop or VMWare Fusion for root, to Downgrade, etc with the DHD?
Regards,

[Q] Recovery Mode inexistant

Okay, so I posted about a week ago re: my softkey issue and fortunately that was fixed by returning my phone to stock, however, I followed nexushacks method and when it told to do this:
Step 12. Once you get the Android guy with exclamation mark, hit Volume Up and Power button at the same time until you get blue menus.
Nothing bloody happens. Please don't tell me I have to hold it for something like 60 seconds because I. Will. Rage. Lol.
When I try to go into recovery I get that symbol and can't do anything but batt pull. I'm still unlocked and rooted, to my knowledge.
I downloaded ROM Manager because I wanted to flash a recovery on it but it told me that "An error occurred while attempting to run privileged commands"
It also says this when I open Rom Manager "You must root your phone for ROM Manager to function. Superuser was not found at "/xbin/su" or "/system/xbin/su". Use google blabla"
I'm also in the process of trying a command prompt on windows but it keeps giving me the "waiting for device" or awaiting a responce from device" whatever that message is...
Trying to give as info as possible so someone can help a brother out.
I can't deal with this Stock OEM crap anymore *twitch*
Thanks!

Herp Derp
Okay, I didn't realize it was Press the Power button, then the volume up button.
Silly noobs.
So my question, is there a way to get Clockwork Recovery back on now or do I have to go through the whole "Rooting" process again?

I assume you see a lock symbol while booting. This means you're unlocked. Now you'll just need to use fastboot to flash a custom recovery (namely, CWM). NexusShacks details how to setup and use fastboot and i think they provide TWRP now, feel free to use this or just download CWM from here and flash that .img file instead.
After this, download the latest Superuser-3.0.7-efghi-signed.zip and flash that. Note that on a stock ROM it will flash stock recovery on every boot. To change this, rename /system/etc/install-recovery.sh to something else.

But how do I flash a .img file when I don't have Recovery mode?
Or can I use do that through the OEM Recovery (blue screen)?

You flash it with fastboot. Fastboot is a command line tool to flash various images through the bootloader screen. To enter the bootloader, turn off the device and hold Vol. Up + Power. This is the same place you would've typed "fastboot oem unlock", except to flash the new recovery you'll be typing something along the lines of "fastboot flash recovery recovery.img". NexusSHacks teaches you how to do all of this.

Ah sorry, I still get Fastboot and Bootloader mixed up.
Only problem is that I don't know if my computer is recognizing my device when I plug it in through Bootloader.
As mentioned in my original post
"I'm also in the process of trying a command prompt on windows but it keeps giving me the "waiting for device" or awaiting a response from device" whatever that message is..."

I'm at work now and trying to figure out how to do this using Terminal on my mac.
When I type in "cd /nexussrootICS" it keeps on telling me "no such file or directory"
Do I need to put this file in a specific folder? I got this step working on my PC at home but it told me "Waiting for device" the whole time.
Any thoughts?

I'm not particularly familiar with OS X so forgive anything i say that might be off target.
You need to direct the terminal to the relative OR absolute directory of that folder. A relative directory can be done by "cd ./blah", while an absolute will be done by "cd /blah". This is quite confusing for people who aren't used to command line, but very simple once you've done it a few times.
Easiest way aside from magical OS X shortcuts i don't know about is:
-Unzip the files to a "nexus" folder on the desktop, making sure the adb files are in this nexus folder and not a sub folder
-open terminal
-"cd /user/artist/desktop/nexus" or whatever the FULL PATH to the folder is. You should be able to see this through the folders properties or in the file explorer.
-Now you are in the folder, you can use adb and fastboot by just typing those words
I believe OS X can recognise the device straight away so you shouldn't need to install any drivers - at least my linux distros were like that. Installing drivers on Windows is detailed in the video, too.

Ah!!!! I feel like I'm so bloody close...
Okay that part worked perfectly, I found out how to at least direct Terminal to the right location but now I'm lost again...
It's giving me this
"
USER-iMac:nexus user$ ./fastboot-mac flash recovery-clockwork-5.0.2.0-crespo.img
unknown partition 'recovery-clockwork-5.0.2.0-crespo.img'
error: cannot determine image filename for 'recovery-clockwork-5.0.2.0-crespo.img'
USER-iMac:nexus user$
"

TheArtist8 said:
Ah!!!! I feel like I'm so bloody close...
Okay that part worked perfectly, I found out how to at least direct Terminal to the right location but now I'm lost again...
It's giving me this
"
USER-iMac:nexus user$ ./fastboot-mac flash recovery-clockwork-5.0.2.0-crespo.img
unknown partition 'recovery-clockwork-5.0.2.0-crespo.img'
error: cannot determine image filename for 'recovery-clockwork-5.0.2.0-crespo.img'
USER-iMac:nexus user$
"
Click to expand...
Click to collapse
The command should be
./fastboot-mac flash recovery recovery-clockwork-5.0.2.0-crespo.img
You were missing the recovery flag in the command.
Sent from my Nexus S 4G using Tapatalk 2

Also do "man fastboot-mac" in terminal to show all its options.
Sent from my Nexus S 4G using Tapatalk 2

Son of a... alright ill try after my lunch.
Sent from my Nexus S using XDA

Omfg I love you guys.
Thanks so much
I just got into Recovery mode, now on to Cyber-GR

Guide to fix TWRP or CWM bootloop

This is how i fix my TF300TG stuck on recovery. I hope the steps descried below will help.
Long story, short:
For some reasons, seems like the WIPE command from TWRP and CWM recovery screw the partitions.
No partitions or microSD card can be mounted.
The tablet is now booting only in recovery mode or in fastboot mode (the screen with three icons - RTK, Android and WIPE) instead of Android.
IMPORTANT:
If your tablet reboot in fastboot mode DONT WIPE IT AGAIN! Just skip step 4.
First of all, MAKE SURE YOR BATTERY IS CHARGED!
Recharge your tablet for at least two hours.During the flashing process the tablet doesn`t charge.
Use the original Asus USB cable that came with the tablet or a high quality replacement cable. Cheap cables can and will cause problems.
Use a laptop or desktop with known good USB ports. If you have problems, try a diferent computer, some USB chips can cause troubles.
Disable the antivirus or screensaver, sleep etc...
1.Download these files:
from ASUS website: http://www.asus.com/Tablets_Mobile/ASUS_Transformer_Pad_TF300TG/#support
Drivers&Tools, on the OS tab select Android
click on Utilities and download latest version of ASUS PC Sync (you will need this for drivers)
click on Firmware and download the lastest available (you will need this for BLOB file)
Minimal ADB and Fastboot: http://d-h.st/gbx
install ASUS PC Sync and Minimal ADB and Fastboot (on fastboot installer check the box that make a shortcut to desktop)
unzip the firmware file downloaded from ASUS site
you will get a second zip file, unzip this one too
the folder unzipped from the second one contain a file called blob
copy or move the folder to the root of your drive C: or D: or whatever drive letter you have
2.Installing drivers:
connect your tablet to PC
you will get a message about Windows couldnt find driver bla...bla, ignore it and keep your tablet plugged
IMPORTANT: even if you previously installed ASUS PC Sync or other drivers and Windows recognize your tablet, you still need to change the driver.
right-click on My Computer-Properties and click Device Manager
find the Asus Android device - should be with an exclamation mark on it (the driver is not installed sign)
right-click on it and choose:
Update Driver Software..., Browse my computer for driver software, Let me pick from a list of device drivers on my computer, Have disk, Browse
go to C:\Program Files or Program Files (x86), ASUS, ASUS Android USB Drivers, Android and select android_winusb.inf
Asus Android Composite ADB interface will appear in the list of device drivers - don`t hit next yet!
uncheck Show Compatible Hardware and select Asus Android Bootloader Interface from the list, now hit next
3.ADB mode:
open Minimal ADB and Fastboot from desktop - from this point, keep it open
type: adb devices - and you should see some numbers under the List of device attached - thats your tablet
if you can`t see the tablet, try this command: adb start-server
4.Booting to "fastboot":
there are two ways to do this:
a) from adb window type: adb reboot bootloader
or
b) reset and hold vol-down (didn`t work for me, but maybe will work for someone else)
the three icons will appear on screen - NOW YOU ARE IN FASTBOOT MODE
if none of the above work try this:
in adb window type: adb reboot
wait until the tablet enter in recovery menu and type in adb window:
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3
adb reboot bootloader
5. Flasing the blob
the credits for this part goes to buster99. He is the one who figured out the right commands for formatting partitions and flashing back the OS
here is his post: http://forum.xda-developers.com/showpost.php?p=44244313&postcount=12
here we go, one at the time in adb window:
fastboot erase system
fastboot erase recovery
fastboot erase userdata
fastboot erase boot
fastboot erase misc
fastboot erase cache
fastboot -i 0x0B05 flash system x:\your blob folder\blob (here you enter the path to your blob file, must end with blob, to point at the file)
fastboot -i 0x0B05 reboot
THE FLASH SYSTEM COMMAND WILL TAKE SOME TIME
be pacient and wait until the progress bar is 100% full on the tablet and you get the command prompt back in the adb window.
After reboot, the Android is back on.
Cheers and good luck!!

A big thank you alexhosu,
several months ago that my tablet was blocked, but I still kept hope
a solution would be found. I'm really happy for you and thank you again for sharing.
Long live XDA

me too
Thanks from me too; was enjoying 5.0 (timduru) on my TF300 when I went to upgrade and idiotically managed to get into a TWRP bootloop(interrupted a format of \data and then used 'wipe' from the boot screen by mistake...)
Your solution has saved my tablet
Am now carefully reinstalling Katkiss

Thanks
This saved my (veggie) bacon too, something went wrong when flashing new ROM (most likely user error - e.g. my fault). Tablet woud go into an eternal boot wouldn't finish booting, nandroid recovery did the same. Used this technique and have a working stock ROM from which I intend to reinstall TimDuru's Lollipop.
Thanks again

Followed the instructions.. Worked well, but getting error 963 when installing/updating anything in Play Store. Seems to be related to storage permissions. Some users are suggesting using format instead of erase. What's the difference? Could that help.
I did factory reset, reflashed and used fix permissions in TWRP but no luck...
alexhosu said:
This is how i fix my TF300TG stuck on recovery. I hope the steps descried below will help.
Click to expand...
Click to collapse

Big thanks from me.
I killed my tablet with an accidental restore to factory defaults while in cm12, an got stuck in an endless bootloader boot loop.
my tablet came back too life at the end of section 4 after adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3.
although getting adb to talk to the tablet was a fluke.
I just kept trying to send "adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3" while the tablet was loading (boot looping)

6 months of believing my tablet was dead, after letting CM12 do its own update thing, and now, thanks to the above instructions, I'm back online and its working with the stock rom.
Thank you so much for this. No idea why I couldn't find these instructions before, then I just gave up, back in business now!

Thanks a lot for your guide, this is what helped me fortunately unbrick my device, i was stuck in a boot loop with a broken recovery

Another tablet saved. Know your work is appreciated.

i have the same problem, the system doesn't pass the ASUS logo, i tired to log into fastboot (reset + volume down) and i was able to see the three icons but adb doesn't recognize my device. i see the drivers are correctly installed but no working adb. Any help is highly appreciated.

ajeevlal said:
i have the same problem, the system doesn't pass the ASUS logo, i tired to log into fastboot (reset + volume down) and i was able to see the three icons but adb doesn't recognize my device. i see the drivers are correctly installed but no working adb. Any help is highly appreciated.
Click to expand...
Click to collapse
Did you try entering "fastboot devices" or just "adb devices"? adb wont find your device in the bootloader, but using fastboot commands should unless it truly is not connecting for some reason.

Act32.97 said:
Did you try entering "fastboot devices" or just "adb devices"? adb wont find your device in the bootloader, but using fastboot commands should unless it truly is not connecting for some reason.
Click to expand...
Click to collapse
yeah Fastboot devices worked but it was not letting me flashing the rom, when i push the blob file it says 'sending' and stays in the same state for days.

ajeevlal said:
yeah Fastboot devices worked but it was not letting me flashing the rom, when i push the blob file it says 'sending' and stays in the same state for days.
Click to expand...
Click to collapse
I would try moving the blob to the root of the C drive and try the 7th command "fastboot -i 0x0B05 flash system C:\blob" just to make sure sometime of file permission type issue isn't happening on the pc side. Other than that the only kind of issue I think it could be would have to be the connection with the drivers, although if erasing the partition's works fine, I don't really see what could be going on.

I followed all the steps and delete, but when loading the file update.blob I get this error:
C: \ Users \ mikel> C: \ Users \ mikel \ Android \ android-sdk \ platform-tools \ fastboot flash system update.blob
error: can not load 'update.blob'
Can someone help me out?

TF300T KissKat
Theziggy said:
This saved my (veggie) bacon too, something went wrong when flashing new ROM (most likely user error - e.g. my fault). Tablet woud go into an eternal boot wouldn't finish booting, nandroid recovery did the same. Used this technique and have a working stock ROM from which I intend to reinstall TimDuru's Lollipop.
Thanks again
Click to expand...
Click to collapse
Hey, I know that I'm a couple years late on this. But, I was just given a Asus Transformer TF300T, and attempted to install the Kisskat custom rom. I unlocked the device with little issues. Rooted with little issues. But when it came to flashing the rom. I get his error saying that "no MD5 file found" and holds it there for a couple of minutes. Then gives me the failed install. My only option is to boot into recovery and restore the stock JB 4.2. If you could point me in the right direction, I would greatly appreciate it. I've searched the forum for someone with a similar issue, and couldn't find it. I hope that I'm not alone on this one. It would kill me to be stuck with the stock rom.

Hi i made a format data from TWRP recovery, and now i am in a recovery loop and got error of mount partitions, i can access to recovery and the screen with 3 icons, but when i plug to my pc it shows as uknown usb, i install the drivers but dosent reconose as a fastboot device, in minimal adb when i write fastboot devices the result is empty pleace help me.

Muito obrigado!
I know this must seem odd, being such an old thread and all but, after several years adding apps and changing ROMs on my wife's TF300T (my gift!) only these past weeks I had the need to search for help, after installing nougatella 7.1, which I did with success, only to stumble on endless logo loops and loading processes without conclusion. Don't get me wrong, the ROM looks great and it wasn't that hard to install but, after two weeks or so, gave me this problem and after correcting it and installing again the ROM, I got in trouble again...
After some five hours googling and trying different stuff, I finally found this thread and twenty minutes ago (around 2:AM) my ASUS returned to its (Jellybean) life!
Alexhosu, thank you so very much for such a detailed, yet easy to follow guide and, if you happen to come to Portugal on vacation and visit Setúbal, I'll have a bottle of Moscatel waiting for you!
Many thanks to Droidbound (who got me off the hook the first time the tablet went nuts!), and also Kevinthefixer, Gtanner00 and some other very inteligent, patient and thoughtful people, and all the guys who shared their difficulties and in a way helped me find the people with the fix.
For anyone interested in trying this method, I would say that it's paramount that you should stick exactly with what is asked and should pay real atention to what is the correct ROM update to download and use. If anyone needs help with translation to Portuguese, just say so.
Again, thank you so much for this!
JMonteiro

alexhosu said:
This is how i fix my TF300TG stuck on recovery. I hope the steps descried below will help.
if none of the above work try this:
in adb window type: adb reboot
wait until the tablet enter in recovery menu and type in adb window:
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3
adb reboot bootloader
5. Flasing the blob
Click to expand...
Click to collapse
Thanks for your help :good: and I'm sorry for my basic English, but here is another tablet saved. Your instructions were clear and my tablet is working.
I hope this information helps, based in the next link (user sszyman): https://forum.xda-developers.com/showthread.php?t=2275035&page=9
in which he recommends using the following commands too:
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p2
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p8
adb shell dd if=/dev/zero of=/dev/block/mmcblk0p1
With these commands and "adb shell dd if=/dev/zero of=/dev/block/mmcblk0p3" I was able to solve my Bootloop problem.
Honestly I don't know which of the commands worked, I used all several times.

How to unroot, lock bootloader and go back to stock?

For background, I have Verizon pixel 2 and am using a Mac.
I went down a massive rabbit hole last night reading through these forums and all the posts and was able to unlock bootloader, flash the January OTA and then root by doing the modified boot file with magisk. (interestingly enough the booting into recovery gives me red ! Over a dead Android and I could not load the OTA that way, nor did the adb sideload OTA comand work either, I had to push the extracted walleye img and then the zip file as discussed in one of the steps in some other thread here)
So anywho, in the end I now have a phone that gives me 2 errors when it reboots, one for unlocked bootloader and another for root telling me something is wrong with my phone and i should contact the manufacturer (which I read on here is normal), but my biggest issue is that my ADT alarm app doesn't work anymore (even if i check it off for hide in magisk). I feel like the root is just not worth it for me and I want to revert to completely stock image, even if it resets my phone and I have to re back everything up all over again like did when i had to do the unlocking of the boot loader.
So -- What are the steps I should take?
1)uninstall magisk from magisk manager?
2)delete magisk manager?
The above will unroot me, correct?
3)Do I push the stock boot image file onto the phone?
4) do I have to repush the latest OTA walleye image and zip file onto the phone again?
5) do I then do the adb reboot and do the flashing lock command (same command i did to unlock the boot loader) to lock up the bootloader and reset to stock?
If someone could be as explicit as possible in correctiong or validating my steps above it would be much, much appreciated.
I don't want to do any more unnecessary steps in flashing things than is needed so if I have extra steps above (perhaps 4 is not needed?) Let me know.
Thanks

Proceed with Caution
I am not an expert by any means, but can speak from personal experience. I was in the exact same situation as you. I followed the detailed steps to unlock the bootloader on my pixel 2, received similar issues, and the same prompt when the phone rebooted. All that to say proceed with caution.
My thoughts on questions 1 & 2: I personally wouldn't recommend you remove or delete magisk from the manager. When I did i had to reinstall it via twrp. My phone functioned fine, apart from the error at reboot.
My thoughts on questions 3 -5: When I followed the steps on XDA for your questions here I ended up bricking my Pixel 2 with locked bootloader from Verizon. Probably an error on my part, but wouldn't want someone else to go through the headache, hours of issues, and then an expensive paper weight.
My suggestion would be to:
1. Leave your phone as is and attempt to trouble shoot the app or apps you are having issue with
2. contact Google support on your phone and see if they would replace it
3. wait for an established method to unroot the pixel 2 here
Thankfully Google replaced my phone due to the error after rebooting, prior to me bricking it. I knew I had a replacement phone coming. So I attempted to go back to stock and that is when I messed it up.
Note sure this is exactly what you were looking for, but hope this helps you.

Dozens of posts with hundreds of pages on how to root but no advice on how to go back to stock cleanly?

iridium7777 said:
Dozens of posts with hundreds of pages on how to root but no advice on how to go back to stock cleanly?
Click to expand...
Click to collapse
Your version is Verizon which is making things more complicated. Generally when the bootloader is unlocked, you just hit flash-all.bat and then relock the phone. Given that the Verizon I'm not sure.
So you are on stock ROM with all these apks loaded ? If you go to settings, then do a factory data reset, you'll reset the phone back to stock and completely wipe the phone and return it to stock, at that point you can go into bootloader mode and relock.
Again your bootloader is unlocked, so the flash-all is your best option. If you see the red exclamation point with the error android laying on his back, you press power and up volume and toggle that and it will bring in the stock recovery which you can sideload the OTA however it may fail since you have magisk.
I bought my phone stock last year and have not rooted it or modified it in anyway. Too many problems and it only gets harder and harder as Google releases a new phone.

@mikeprius -- thank you for replying. after reading more on here, it seems like that's the way to go -- flash-all script, seems like i don't really need to do 1&2 that i wrote above as the flash-all will wipe that out by itself.
at that point i should be running the latest stock 8.1 but with an unlocked bootloader (and according boot up message screen) and i should be able to re-do the fastbook unlocking command to lock the phone back up.
(and yes, after reading even more now -- and i tried this yesterday -- i completely missed the portion about PWR + Vol Up button, that's why i think i had that issue, but still, i was able to push the update by pushing img and then the zip through).

iridium7777 said:
@mikeprius -- thank you for replying. after reading more on here, it seems like that's the way to go -- flash-all script, seems like i don't really need to do 1&2 that i wrote above as the flash-all will wipe that out by itself.
at that point i should be running the latest stock 8.1 but with an unlocked bootloader (and according boot up message screen) and i should be able to re-do the fastbook unlocking command to lock the phone back up.
(and yes, after reading even more now -- and i tried this yesterday -- i completely missed the portion about PWR + Vol Up button, that's why i think i had that issue, but still, i was able to push the update by pushing img and then the zip through).
Click to expand...
Click to collapse
If I were in your situation and the bootloader is unlocked, just use flash-all which has a wipe script then call it a day. I think trying to screw around even more is just a waste of time and I wouldn't even bother with the OTA, just erase and flash stock. You don't have to relock your bootloader if you don't want to, if you stay fully stock you may still be able to get OTA updates. I'm not sure if a bootloader locked is required someone can chime in as it has been awhile since I've done this, but over 1 yr ago, I just kept the bootloader unlocked, kept things stock and everything was good to go. Obviously there are security issues with an unlocked bootloader, but I'm sure you know this already

@mikeprius you keep saying reset/erase, do you suggest i re-set the phone and then flash the stock image?
i was just going to flash the stock image, i figured it already wipes the phone, and locking the bootloader would wipe it again, so what's the point of erasing all data prior?

Not to hijack this thread, but a question to add... I thought that there were kernels that would mask certain things to allow all of those apps to work, and get rid of the "problem with device" message.
Is that correct?

iridium7777 said:
@mikeprius you keep saying reset/erase, do you suggest i re-set the phone and then flash the stock image?
i was just going to flash the stock image, i figured it already wipes the phone, and locking the bootloader would wipe it again, so what's the point of erasing all data prior?
Click to expand...
Click to collapse
Just flash the stock images. It will auto reset.
Again, don't mess with anything just flash stock images, then go from there.
Also flash the newest version of the stock images out there. The pixel 2 will error if you try to downgrade any version.

here are all the steps to UNROOT and LOCK the boot loader on your Pixel 2 on a Mac (windblows users simply ignore all the "./" references).
1) download the latest ADB tools from google
2) download the latest factory Walleye image
3) unzip files from 1&2 into a common directory
4) edit flash-all.sh file and add "./" infront of every instance of "fastboot" in the script [windows users ignore this step]
5)hook up your phone to your computer in debug and file transfer mode. check that "./adb devices" loads your devide
6)type " ./adb reboot bootloader"
7) check that your device is still connected by typing "./fastboot devices"
8) type "./flash-all.sh"
===the script will run and your phone will be restored to stock, and UNROOTED. upon boot up skip through all of the setup steps and get to the phone settings as fast as you can. enable developer option, enable debug mode, set phone to data transfer ====
9) check that your phone is connect to your computer by "./adb devices"
10) type "./adb reboot bootloader"
11) check your devices is still connected by "./fastboot devices"
12) type "./fastboot flashing lock"
===== this will re-wipe your device again, you'll see the circle of death, and this will LOCK your boot loader back up again======
side note, feel free to skip over the steps where you check that your phone is still connected to the computer (./fastboot devices) if you're less paranoid and comfortable.

iridium7777 said:
here are all the steps to UNROOT and LOCK the boot loader on your Pixel 2 on a Mac (windblows users simply ignore all the "./" references).
1) download the latest ADB tools from google
2) download the latest factory Walleye image
3) unzip files from 1&2 into a common directory
4) edit flash-all.sh file and add "./" infront of every instance of "fastboot" in the script [windows users ignore this step]
5)hook up your phone to your computer in debug and file transfer mode. check that "./adb devices" loads your devide
6)type " ./adb reboot bootloader"
7) check that your device is still connected by typing "./fastboot devices"
8) type "./flash-all.sh"
===the script will run and your phone will be restored to stock, and UNROOTED. upon boot up skip through all of the setup steps and get to the phone settings as fast as you can. enable developer option, enable debug mode, set phone to data transfer ====
9) check that your phone is connect to your computer by "./adb devices"
10) type "./adb reboot bootloader"
11) check your devices is still connected by "./fastboot devices"
12) type "./fastboot flashing lock"
===== this will re-wipe your device again, you'll see the circle of death, and this will LOCK your boot loader back up again======
side note, feel free to skip over the steps where you check that your phone is still connected to the computer (./fastboot devices) if you're less paranoid and comfortable.
Click to expand...
Click to collapse
hey there. what is the command suppose to look like? every combination I try gives me an error:
first, I don't even enter the Fastboot command the same wayit given me an error:
Asads-MacBook:~ asad$ ./fastboot devices
-bash: ./fastboot: No such file or directory
so I try this: Asads-MacBook:~ asad$ fastboot devices
[serial #] fastboot
these are all the errors I get:
Asads-MacBook:~ asad$ cd /Users/asad/Desktop/walleye-opm1.171019.021
Asads-MacBook:walleye-opm1.171019.021 asad$ ./flash-all.sh
./flash-all.sh: line 21: fastboot./: No such file or directory
...
Asads-MacBook:walleye-opm1.171019.021 asad$ ./flash-all.sh
./flash-all.sh: line 21: ./fastboot: No such file or directory
...
Asads-MacBook:walleye-opm1.171019.021 asad$ ./flash-all.sh
fastboot: usage: unknown command ./flash
...
Asads-MacBook:walleye-opm1.171019.021 asad$ ./flash-all.sh
./flash-all.sh: line 21: fastboot./: No such file or directory
...
how is the command suppose to look that I can edit it the right way?

"fastboot: No such file or directory" means that you didn't do step 1, step 3 on the file you didn't download, and there should probably be a "cd /<whatever the 'common directory'>" is. (I just created a directory named adb. That's good enough for me to know what it's for.)
You have to download adb and fastboot (which come in the adb tools file), unzip them to whatever directory you're going to use for flashing the phone, and cd to that directory.
Then, since you're evidently on MacOS, each command has to have ./ in front of it (that says "the current directory"). Try all that, then see what happens.

Rukbat said:
"fastboot: No such file or directory" means that you didn't do step 1, step 3 on the file you didn't download, and there should probably be a "cd /<whatever the 'common directory'>" is. (I just created a directory named adb. That's good enough for me to know what it's for.)
You have to download adb and fastboot (which come in the adb tools file), unzip them to whatever directory you're going to use for flashing the phone, and cd to that directory.
Then, since you're evidently on MacOS, each command has to have ./ in front of it (that says "the current directory"). Try all that, then see what happens.
Click to expand...
Click to collapse
yayy! that worked!
so i had adb and fastboot in a folder (platform-tools) and i had the factory image in its own seperate folder (walleye-files). i was making the cd; walleye folder and trying to flash-all.sh there.
so i had to put the files from the walleye folder into the platform-tools folder. Then I made platform-tools the cd. now when . i could now follow all the steps from 4-12 and got the pixel 2 the way it was OTB.
thanks!

Great! I'm not a Mac expert (last time I used one was the 128K Mac in 1985), so I'm not sure how to export a path in MacOs, so I gave you the complicated way, but you got it done anyway. (If you ever find out how to add the platform-tools folder to your path, you can leave adb and fastboot in there and keep the ROMs [walleye] in their own folder, cd to it and adb and fastboot will still work.)