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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"?

Stuck on htc screen 'flashed wrong rom'

Hi all,
I accidentally flashed a wrong ROM of HTC HD, so I'm trying to go back to recovery mode to flash another ROM of my Desire S, when I select the recovery then I am stuck on htc screen
Can someone advice me please?
Thanks.
[Solved] Thank you all for helping me through, I finally, I can made it. See the last post of the actually summary of my own journey.
Without all of your value input, I will never made it.

imkr said:
Hi all,
I accidentally flashed a wrong ROM of HTC HD, so I'm trying to go back to recovery mode to flash another ROM of my Desire S, when I select the recovery then I am stuck on htc screen
Can someone advice me please?
Thanks.
Click to expand...
Click to collapse
At the first place, why and how did you flash an HTC HD rom to Desire S without even knowing it?! You should have know from the start that you should have taken precautions, and known that its an HTC HD. It should be PORTED first.
To answer,
Try flashing the recovery again on fastboot. Check my guides on how to on my sig (preferrably the second one). Then see if it works. If it did, flash the CORRECT rom.

I am a bit new with this sir, sorry need a bit detail explanation.
The point is I cannot get on the recovery mode, so when I read this guide (http://forum.xda-developers.com/showthread.php?t=1314629) I feel not clear enough
Can you give me a bit more clear process, sir?

imkr said:
I am a bit new with this sir, sorry need a bit detail explanation.
The point is I cannot get on the recovery mode, so when I read this guide (http://forum.xda-developers.com/showthread.php?t=1314629) I feel not clear enough
Can you give me a bit more clear process, sir?
Click to expand...
Click to collapse
What I'm trying to say is to flash the recovery again. 4ext recovery recommended. And start from there. Clear instructions were given on that thread on how to flash a recovery image via fastboot, and I believe I can't simplify it much further.

imkr said:
Hi all,
I accidentally flashed a wrong ROM of HTC HD, so I'm trying to go back to recovery mode to flash another ROM of my Desire S, when I select the recovery then I am stuck on htc screen
Can someone advice me please?
Thanks.
Click to expand...
Click to collapse
Mate don't worry, it happened to me many times.see this thread to know how I got a solution.forum.xda-developers.com/showthread.php?t=1281688
I used nandroid backup but you can flash another ROM

Thanks for helping me to walk through, Skanob!
I've try as the instruction:
1. Get the 4EXTRecovery_v2.1.0_saga.zip (from your signature)
2. Copy the file 'recovery.img' to C:\recovery.img
3. Connect my phone on fastboot
4. Open the cmd to type 'C:\recovery.img
5. Appear the dialog-box DVD burning 'The burn fail invalid...'
I try to do these again and again 10 times +
What should I do now?

imkr said:
Thanks for helping me to walk through, Skanob!
I've try as the instruction:
1. Get the 4EXTRecovery_v2.1.0_saga.zip (from your signature)
2. Copy the file 'recovery.img' to C:\recovery.img
3. Connect my phone on fastboot
4. Open the cmd to type 'C:\recovery.img
5. Appear the dialog-box DVD burning 'The burn fail invalid...'
I try to do these again and again 10 times +
What should I do now?
Click to expand...
Click to collapse
After you get the phone in FASTBOOT mode, open the cmd window and type:
FASTBOOT FLASH RECOVERY c:\recovery.img

I find it very worrying that some one who can claim to have made this mistake many times is prepared to offer advice!
nandroid backups, you now see the importance of taking them
Swyped from my Desire S using XDA Premium

imkr said:
Thanks for helping me to walk through, Skanob!
I've try as the instruction:
1. Get the 4EXTRecovery_v2.1.0_saga.zip (from your signature)
2. Copy the file 'recovery.img' to C:\recovery.img
3. Connect my phone on fastboot
4. Open the cmd to type 'C:\recovery.img
5. Appear the dialog-box DVD burning 'The burn fail invalid...'
I try to do these again and again 10 times +
What should I do now?
Click to expand...
Click to collapse
The message you got is because you try to "run" in an windows command prompt an ".img" (image files). If you do so, windows try to launch the associated program with .img files. Obiviously this is the DVD burning software you have on your PC (the default windows one I think). That's why you get the error.
Now, you should pay attention very carefully to the instructions in that thread. You should NOT type "C:\recovery.img" but "fastboot flash recovery C:\recovery.img". That means you should already have installed "fastboot" application on your PC (or else you'll get a message say somthing like "'fastboot' is not recognized as an internal or external command, operable program or batch file." "fastboot" command is part of the Android SDK and should reside on your PC in the same place as "adb", that is in the "tools" (or "platform-tools" depending on what version of SDK you got) folder.
Simply, you first have to find where on your PC is installed the Android SDK. Browse with Explorer on your PC to there and look in the folders till you find the one in which "adb" and "fastboot" are. Keep the SHIFT key pressed and RIGHT click on that folder. From the menu that pops up, select "Open comand prompt here..."
Only now you can run the "fastboot" command...and if you have copied Recovery.img on the root of your C drive perform the command as instructed (an as I've wrote above). If Recovery.img is somwhere else on your pc than use it like this (after you perform steps 1-3 you've said):
fastboot flash recovery <folder_in_which_recovery.img_is stored>\recovery.img
Replace what I've wrote in italics above with the actual path to your recovery.img file.
After running this command, type the following one:
fastboot reboot-bootloader
You'll end up in 4EXT recovery from where you can flash the ROM of your will (hopefully one for Desire S this time)

Rapier said:
The message you got is because you try to "run" in an windows command prompt an ".img" (image files). If you do so, windows try to launch the associated program with .img files. Obiviously this is the DVD burning software you have on your PC (the default windows one I think). That's why you get the error.
Now, you should pay attention very carefully to the instructions in that thread. You should NOT type "C:\recovery.img" but "fastboot flash recovery C:\recovery.img". That means you should already have installed "fastboot" application on your PC (or else you'll get a message say somthing like "'fastboot' is not recognized as an internal or external command, operable program or batch file." "fastboot" command is part of the Android SDK and should reside on your PC in the same place as "adb", that is in the "tools" (or "platform-tools" depending on what version of SDK you got) folder.
Simply, you first have to find where on your PC is installed the Android SDK. Browse with Explorer on your PC to there and look in the folders till you find the one in which "adb" and "fastboot" are. Keep the SHIFT key pressed and RIGHT click on that folder. From the menu that pops up, select "Open comand prompt here..."
Only now you can run the "fastboot" command...and if you have copied Recovery.img on the root of your C drive perform the command as instructed (an as I've wrote above). If Recovery.img is somwhere else on your pc than use it like this (after you perform steps 1-3 you've said):
fastboot flash recovery <folder_in_which_recovery.img_is stored>\recovery.img
Replace what I've wrote in italics above with the actual path to your recovery.img file.
After running this command, type the following one:
fastboot reboot-bootloader
You'll end up in 4EXT recovery from where you can flash the ROM of your will (hopefully one for Desire S this time)
Click to expand...
Click to collapse
It's working for me now, thanks for your clear instructions:
I've type up the exact process that I experienced here
1. Get 4EXT
2. Extract to C:
3. Find android-win-tools
4. SHIFT + Right click to open cmd from here
5. Type 'fastboot flash recovery C:\recovery.img', then appeared:
sending 'recovery'... OKAY (keep looking around 10mn), another command appeared
writing 'recovery'...OKAY
6. fastboot reboot-bootloader
DONE!

Error: can not load recovery-Tiamat-R4c-100611-1150-cwm

So I have my Xoom unlocked and I am trying to flash the recovery in order to root. I have the recovery in the platform tools folder along with fastboot and all that, and I'm able to get the Xoom into fastboot from adb, but I can't get the recovery to flash. I'm typing the name correct. And I'm putting in 'fastboot flash recovery recovery-Tiamat-R4c-100611-1150-cwm.img' without the quotes. Honestly I'm a little bit stumped at this point.

I have had the same issue for the past few days I have also tried the steps here no luck.... http://forum.xda-developers.com/showthread.php?t=1249798

supenova3000 said:
I have had the same issue for the past few days I have also tried the steps here no luck.... http://forum.xda-developers.com/showthread.php?t=1249798
Click to expand...
Click to collapse
I used the same guide. It just makes no sense that I can control the Xoom and unlock it, but I can't flash the darn recovery.

williamthegoat said:
I used the same guide. It just makes no sense that I can control the Xoom and unlock it, but I can't flash the darn recovery.
Click to expand...
Click to collapse
I tried moving the files from the tools folder to platform tools still no luck.. all of this for the I C S flash I'm going to keep working on a solution I will let you know if I have any luck!

So I have the android sdk in c:\ , and in the sdk folder I have everything, and in the platform tools I have my fastboot and recovery. I then use cmd to get into adb, then I put the xoom in fastboot. From there I try to flash the recovery, which always fails. I must be doing something wrong here.

Try downloading the IMG again. Or try out the rogue recovery. I actually like rogue better.
Sent from my MB860 using xda premium

I finally got it. In command I needed to direct it to the platform tools folder and then it flashed just fine. I am now rooted. Now to learn about flashing ICS
Thanks for the responses and help guys

Think you have to be stock to flash to ICS, at least that was the word yesterday.
I gave up trying to root just as I found out about the ICS update.

williamthegoat said:
I finally got it. In command I needed to direct it to the platform tools folder and then it flashed just fine. I am now rooted. Now to learn about flashing ICS
Thanks for the responses and help guys
Click to expand...
Click to collapse
Two simple errors:
1) not opening the command window from the folder where you have fastboot and the image files you're trying to flash; and
2) not realizing that you have hidden file extensions in Windows, and typing ...recovery.img.img

williamthegoat said:
So I have my Xoom unlocked and I am trying to flash the recovery in order to root. I have the recovery in the platform tools folder along with fastboot and all that, and I'm able to get the Xoom into fastboot from adb, but I can't get the recovery to flash. I'm typing the name correct. And I'm putting in 'fastboot flash recovery recovery-Tiamat-R4c-100611-1150-cwm.img' without the quotes. Honestly I'm a little bit stumped at this point.
Click to expand...
Click to collapse
I assume that you've set up a path in environment variables to run adb and fastboot from ay directory... and are running the flash command from a folder other than where your .IMG file is located. In order for fastboot to find the file you're trying to flash, you actually have to run your flash command from the folder your file is located...
So, cd\...\platform-tools and then flash

The simplest way I perform all of my operations for this:
I leave everything installed into it's default locations. I download tiamat's CWM image and place it into the platform-tools folder.
For Windows 7, I use Windows PowerShell.
For example: Open Start Menu > Type "power" to search, "Windows PowerShell" should show up. (For me, its default at the top - so I press enter to open it)
Once opened: I type this configuration EXACTLY as is: (Keys in <>)
Code:
cd C:\Pr <TAB><TAB> An <TAB> An <TAB> Pl <TAB><TAB> <ENTER>
This above brings me directly to:
C:\Program Files (x86)\Android\Android-sdk\Platform-tools\
Of course, this will be different depending upon your computer setup. I've nailed this routine to get to the path the quickest.
to use FASTBOOT (XOOM already in fastboot mode):
Code:
./fastboot flash recovery rec<TAB><ENTER>
This auto completes the filename as ./recovery-tiamat-r4c-xxxx.img
Of course, depending on how many files/folders you have, you may have to hit <TAB> multiple times. I have to do it 3 or 4 times to select the recovery image I want.
Auto-complete is a nice thing. "./" is added to command from the working directory.

williamthegoat said:
I finally got it. In command I needed to direct it to the platform tools folder and then it flashed just fine. I am now rooted. Now to learn about flashing ICS
Thanks for the responses and help guys[/QUOTE
Worked for me too!!! Thanks!!!
Click to expand...
Click to collapse

[Q] [Problem] Cannot flash recovery

Hi All.
Hopefully someone is able to help me. I'll try to give as much information as I can.
I have followed the following guide to root my nexus 5.
I have rooted it successfully last month.
However, I have accidentally installed a OTA update from google this week (Android 4.4.3).
Just a while earlier, I have decided to flash a custom rom.
So, as usual, I reboot my phone into recovery.
However, the recovery shows the android with a red triangle, stating "no command".
I have read the forums and read that this is actually not an error but it is the default recovery for android. (Edit: Ok. Maybe its not the default recovery. Anyone able to give me advice on this?)
I guess that my recovery was returned to the stock recovery after the OTA update.
So I tried to flash CWM recovery using ROM manager, but it states "An error occured while flashing your recovery".
I decided to restart my phone and to try it again, now it stucks at 100% on ROM Manager.
I have also tried to flash recovery.img using fastboot. However, it didn't work too.
It returns with an error: "cannot open recovery.img"
May I know if anyone can help me with this problem?
More info on the current status of my phone:
Bootloader unlocked. (Checked by trying to unlock it again. System states that process has failed as it is already unlocked)
ADB Device: Detect-able.
Fastboot Device: Detect-able.

It is indeed the stock recovery. OTA returned it. It also removed root so rom manager won't work, but you shouldn't use rom manager anyway.
You'll need to download a recovery and flash it using fastboot .
Please describe the exact steps you took to get the fastboot error. Screenshot of cmd would be very helpful too please
Sent from my Nexus 5 using Tapatalk

rootSU said:
It is indeed the stock recovery. OTA returned it. It also removed root so rom manager won't work, but you shouldn't use rom manager anyway.
You'll need to download a recovery and flash it using fastboot .
Please describe the exact steps you took to get the fastboot error.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
What I did is to check if the boot loader is unlocked.
And yes. It is unlocked.
So I carried onto checking if fastboot detects my devices by doing "fastboot devices". And my nexus5 gets detected.
Then I moved on to trying to flash recovery using " fastboot flash recovery recovery.img ".
But the error appears at this point. And I'm stuck.
Is this sufficient?
Do note that I did change the file name to recovery and not recovery.img as most files do not include the file type in the file name.

Try flashing the recovery using dd (You need root)
Boot the phone normally and push the recovery.img using adb and flash it:
Code:
adb push *Path to recovery.img* /data/media/0/
adb shell
# dd if=/data/media/0/recovery.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
I hope this helps.

You would be better served setting windows not to hide known file types to be honest.
A screenshot of your fastboot flash attempt and error would be most useful please
Sent from my Nexus 5 using Tapatalk
---------- Post added at 05:40 PM ---------- Previous post was at 05:28 PM ----------
chblg said:
Try flashing the recovery using dd (You need root)
Boot the phone normally and push the recovery.img using adb and flash it:
Code:
adb push *Path to recovery.img* /data/media/0/
adb shell
# dd if=/data/media/0/recovery.img of=/dev/block/platform/msm_sdcc.1/by-name/recovery
I hope this helps.
Click to expand...
Click to collapse
He hasn't got root. Fastboot is his only option
Sent from my Nexus 5 using Tapatalk

Well FWIW for anyone else reading, my assumption was going to be that the OP didn't put the full path to the recovery OR didn't put the recovery in the location the cmd prompt was running from.
Would have been nice to have seen this through to conclusion, but I cannot monitor forever so I'm unsubscribing due to lack of replies.
eg:
Code:
c:\Users\Administrator>fastboot flash recovery recovery.img
If there is no path to recovery image as above, then the asumption to cmd is that the recover image is in c:\users\administrator (Which it probably isnt)
If it is on the administrators desktop you would:
Code:
c:\Users\Administrator>fastboot flash recovery c:\users\Administrator\Desktop\recovery.img

Nukyi said:
Hi All.
Hopefully someone is able to help me. I'll try to give as much information as I can.
I have followed the following guide to root my nexus 5.
I have rooted it successfully last month.
However, I have accidentally installed a OTA update from google this week (Android 4.4.3).
Just a while earlier, I have decided to flash a custom rom.
So, as usual, I reboot my phone into recovery.
However, the recovery shows the android with a red triangle, stating "no command".
I have read the forums and read that this is actually not an error but it is the default recovery for android. (Edit: Ok. Maybe its not the default recovery. Anyone able to give me advice on this?)
I guess that my recovery was returned to the stock recovery after the OTA update.
So I tried to flash CWM recovery using ROM manager, but it states "An error occured while flashing your recovery".
I decided to restart my phone and to try it again, now it stucks at 100% on ROM Manager.
I have also tried to flash recovery.img using fastboot. However, it didn't work too.
It returns with an error: "cannot open recovery.img"
May I know if anyone can help me with this problem?
More info on the current status of my phone:
Bootloader unlocked. (Checked by trying to unlock it again. System states that process has failed as it is already unlocked)
ADB Device: Detect-able.
Fastboot Device: Detect-able.
Click to expand...
Click to collapse
rootSU said:
Well FWIW for anyone else reading, my assumption was going to be that the OP didn't put the full path to the recovery OR didn't put the recovery in the location the cmd prompt was running from.
Would have been nice to have seen this through to conclusion, but I cannot monitor forever so I'm unsubscribing due to lack of replies.
eg:
Code:
c:\Users\Administrator>fastboot flash recovery recovery.img
If there is no path to recovery image as above, then the asumption to cmd is that the recover image is in c:\users\administrator (Which it probably isnt)
If it is on the administrators desktop you would:
Code:
c:\Users\Administrator>fastboot flash recovery c:\users\Administrator\Desktop\recovery.img
Click to expand...
Click to collapse
Hi. Sorry for late reply. Was at work. I'll try out the full path. What I was told is to just put the recovery IMG into the same folder as fastboot and it should do the trick. Will post screenshots after trying out.

Nukyi said:
Hi. Sorry for late reply. Was at work. I'll try out the full path. What I was told is to just put the recovery IMG into the same folder as fastboot and it should do the trick. Will post screenshots after trying out.
Click to expand...
Click to collapse
Hi All,
Here's the screenshot of my cmd.
Please kindly assist and advise on what should I do.
Thank you.

Nukyi said:
Hi All,
Here's the screenshot of my cmd.
Please kindly assist and advise on what should I do.
Thank you.
Click to expand...
Click to collapse
Ok thanks.
Did you turn off "Hide known file types"? can you screenshot in Windows explorer, the location of the recovery image with hide turned off and in "details" view please?

rootSU said:
Ok thanks.
Did you turn off "Hide known file types"? can you screenshot in Windows explorer, the location of the recovery image with hide turned off and in "details" view please?
Click to expand...
Click to collapse
Yes. I did. Here are the images.
I'm using windows8. So it may look a little different.

Nukyi said:
Yes. I did. Here are the images.
I'm using windows8. So it may look a little different.
Click to expand...
Click to collapse
If I gave you a few steps to try and rule out some variables to narrow down the fault are you happy to do them?
My first thing to suggest would be to take a copy of the "platform-tools" folder and drop it on the root of c: (meaning ensure c:\platform-tools exists)
Then right click Computer > Properties > Advanced System Settings (A System Properties pop up will be shown, in the advanced tab)
In the pop-up, press "Environment Variables" and in the bottom window, called "System variables" scroll down to the entry called "Path" and press edit.
Scroll to the very end of the line of text. Add the following to the end of the line with no spaces (and no quotes obviously)
";c:\platform-tools" and click OK to all windows and pop-ups. Just to break that down, it is a semi colon ; followed by the path to the platform-tools folder.
Give yourself a restart.
What this does, is gives you the ability to call the fastboot command from anywhere. So instead of typing Desktop\adt-bundle......\platform-tools\fastboot flash blah blah, you can literally just type "fastboot flash" because like other commands, it is now a system variable.
Then put the recovery.img in the directory that cmd opens up to which appears to be be "c:\users\blah"
Then open cmd and do the basic command with no paths.... fastboot flash recovery recovery.img
Let me know,
Thanks

rootSU said:
If I gave you a few steps to try and rule out some variables to narrow down the fault are you happy to do them?
My first thing to suggest would be to take a copy of the "platform-tools" folder and drop it on the root of c: (meaning ensure c:\platform-tools exists)
Then right click Computer > Properties > Advanced System Settings (A System Properties pop up will be shown, in the advanced tab)
In the pop-up, press "Environment Variables" and in the bottom window, called "System variables" scroll down to the entry called "Path" and press edit.
Scroll to the very end of the line of text. Add the following to the end of the line with no spaces (and no quotes obviously)
";c:\platform-tools" and click OK to all windows and pop-ups. Just to break that down, it is a semi colon ; followed by the path to the platform-tools folder.
Give yourself a restart.
What this does, is gives you the ability to call the fastboot command from anywhere. So instead of typing Desktop\adt-bundle......\platform-tools\fastboot flash blah blah, you can literally just type "fastboot flash" because like other commands, it is now a system variable.
Then put the recovery.img in the directory that cmd opens up to which appears to be be "c:\users\blah"
Then open cmd and do the basic command with no paths.... fastboot flash recovery recovery.img
Let me know,
Thanks
Click to expand...
Click to collapse
Alright. I'll do it and get back to you shortly.
Thank you.
Really hope this fixes the problem.

rootSU said:
If I gave you a few steps to try and rule out some variables to narrow down the fault are you happy to do them?
My first thing to suggest would be to take a copy of the "platform-tools" folder and drop it on the root of c: (meaning ensure c:\platform-tools exists)
Then right click Computer > Properties > Advanced System Settings (A System Properties pop up will be shown, in the advanced tab)
In the pop-up, press "Environment Variables" and in the bottom window, called "System variables" scroll down to the entry called "Path" and press edit.
Scroll to the very end of the line of text. Add the following to the end of the line with no spaces (and no quotes obviously)
";c:\platform-tools" and click OK to all windows and pop-ups. Just to break that down, it is a semi colon ; followed by the path to the platform-tools folder.
Give yourself a restart.
What this does, is gives you the ability to call the fastboot command from anywhere. So instead of typing Desktop\adt-bundle......\platform-tools\fastboot flash blah blah, you can literally just type "fastboot flash" because like other commands, it is now a system variable.
Then put the recovery.img in the directory that cmd opens up to which appears to be be "c:\users\blah"
Then open cmd and do the basic command with no paths.... fastboot flash recovery recovery.img
Let me know,
Thanks
Click to expand...
Click to collapse
I have tried it. Still doesn't work. (Screenshot as attachment)
Could there be a problem with the phone instead of with the path/common errors?

Did you check if the MD5 of the recovery file is correct? (to rule out a bad download)

jj14 said:
Did you check if the MD5 of the recovery file is correct? (to rule out a bad download)
Click to expand...
Click to collapse
Re-downloaded it many times. Checked all of the md5.
Downloaded not only CWM recovery. But also other custom recovery.

Nukyi said:
I have tried it. Still doesn't work. (Screenshot as attachment)
Could there be a problem with the phone instead of with the path/common errors?
Click to expand...
Click to collapse
Now try and run cmd as an administrator if you are not doing

Nukyi said:
I have tried it. Still doesn't work. (Screenshot as attachment)
Could there be a problem with the phone instead of with the path/common errors?
Click to expand...
Click to collapse
no. the recovery.img is not in c:\users\username\
put that file there, then retry your command
OR
fastboot flash recovery c:\entire\path\to\recovery.img

Nukyi said:
Re-downloaded it many times. Checked all of the md5.
Downloaded not only CWM recovery. But also other custom recovery.
Click to expand...
Click to collapse
are you sure you downloaded the image and not the zip??

samersh72 said:
are you sure you downloaded the image and not the zip??
Click to expand...
Click to collapse
Pretty sure it is the image. Downloaded from the website itself. They only comes in .img and not in zip.

Nukyi said:
Pretty sure it is the image. Downloaded from the website itself. They only comes in .img and not in zip.
Click to expand...
Click to collapse
Ah. It just worked suddenly. No idea why. But I guess @rootSU 's suggestion works well.
And maybe also @Zepius 's suggestion.
Here's what I did to help others who have the same problem.
I did what rootSU asked me to do (changing the "path" part).
Then took Zepius suggestion and duplicated the recovery img in a few folders (the original folder i'm using, on desktop, on C drive root folder)

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.)