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Fastboot and ADB not working, please help. Tried multiple PCs already

I was working on rooting my device, and had a working root successfully with Magisk. But then I wanted to remove it and relock my bootloader, that's when the trouble started.
I am able to boot the phone and it is working. I can boot to recovery (stock OEM not TWRP), can boot to bootloader, and can boot and use the Oxygen OS. But I cannot get fastboot to run to lock the bootloader. ADB devices comes up empty. These are the steps that I've tried:
-using it on my chromebook that was working with ADB before the unrooting mess
-installed fastboot and adb along with Oneplus USB drivers on a fresh Windows 8 copy
-2 different red OEM oneplus cables
My goal is to return completely to stock and a locked bootloader. Any help would be appreciated, it really seems to be a phone issue and not a driver issue. Thanks everyone!

Use the unbrick tool. That autolocks bootloader when it flashes stock.

NateDev said:
Use the unbrick tool. That autolocks bootloader when it flashes stock.
Click to expand...
Click to collapse
I looked into the tool, but I thought from what I read I had to be in fastboot mode to start. I can't get fastboot or adb to connect. Do you know if it will work without fastboot?

bam099 said:
I looked into the tool, but I thought from what I read I had to be in fastboot mode to start. I can't get fastboot or adb to connect. Do you know if it will work without fastboot?
Click to expand...
Click to collapse
Are you sure you have USB debugging checked in developer options?

Absolutely. Just checked again. I would normally say it was a driver issue, but it was working fine until I flashed a boot.img and also I used a windows pc and a Chromebook and chrome os pretty much comes ready to talk to android phones or of the box. I was wondering if adb could have been messed up during the flashing of boot images.

bam099 said:
I looked into the tool, but I thought from what I read I had to be in fastboot mode to start. I can't get fastboot or adb to connect. Do you know if it will work without fastboot?
Click to expand...
Click to collapse
No fastboot needed, it's done with the phone off.

NateDev said:
No fastboot needed, it's done with the phone off.
Click to expand...
Click to collapse
Even better! I will definitely try the tool and report back.

NateDev said:
No fastboot needed, it's done with the phone off.
Click to expand...
Click to collapse
This was correct and it worked. Phone is restored back to stock with a locked bootloader and everything is working as it should.

fastboot cannot recognize device but adb can

usb debugging is enabled on device. running latest version of adb, fastboot. Have tried on both mac and win10 but same issue on both.
Oneplus 7 pro is running 10.3.0GM21AA
>fastboot devices
>adb devices
List of devices attached
966c8016 device
Trying to use fastboot to flash patched magisk img and install magisk.

Do you enter in fastboot in phone?
Sent from my GM1910 using Tapatalk

Yes tried from bootloader as well

fustyler said:
Yes tried from bootloader as well
Click to expand...
Click to collapse
bootloader-fastboot mode is the only time fastboot commands will work. I know you tried this "also". But I feel you are wasting your time trying to run fastboot when phone is booted (instead of focusing on the situation where fastboot should actually be working). adb and fastboot will not work at the same time by definition. Also, debugging does not need to be enabled for fastboot (only for adb).

redpoint73 said:
bootloader-fastboot mode is the only time fastboot commands will work. I know you tried this "also". But I feel you are wasting your time trying to run fastboot when phone is booted (instead of focusing on the situation where fastboot should actually be working). adb and fastboot will not work at the same time by definition. Also, debugging does not need to be enabled for fastboot (only for adb).
Click to expand...
Click to collapse
I have tried it from bootloader and still the same on my pc it just says waiting for device.
What else can I try?

fustyler said:
I have tried it from bootloader and still the same on my pc it just says waiting for device.
What else can I try?
Click to expand...
Click to collapse
Try a different cable, different USB port. Fastboot can be finicky sometimes. You can also go to Windows Device Manager, find the device, and see if you can manually select the drivers. There is a generic Android device driver that sometimes gets fastboot to work properly on some of my past devices. This is on Windows 7, haven't done this on WIn 10 yet, so not sure if it is exactly the same.

redpoint73 said:
Try a different cable, different USB port. Fastboot can be finicky sometimes. You can also go to Windows Device Manager, find the device, and see if you can manually select the drivers. There is a generic Android device driver that sometimes gets fastboot to work properly on some of my past devices. This is on Windows 7, haven't done this on WIn 10 yet, so not sure if it is exactly the same.
Click to expand...
Click to collapse
Have tried different cables and different machines both pc and mac

What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me

Since adb is working, do an adb reboot bootloader and it'll then boot into fastboot. If you can't get a return on fastboot devices at this point, it could be you haven't oem unlocked your phone yet.

mnemesis said:
Since adb is working, do an adb reboot bootloader and it'll then boot into fastboot. If you can't get a return on fastboot devices at this point, it could be you haven't oem unlocked your phone yet.
Click to expand...
Click to collapse
I ran adb reboot bootloader from pc to boot phone into fastboot.
In the bootloader it states device state is unlocked
However fastboot devices ran from pc still shows no device.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
Thanks this fixed it.

Issue fixed by billyt1's comment above. case closed.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
This worked for me as well. Just to make it clear, rephrasing his reply. After disabling signature verification on windows 10, connect your phone in fastboot mode & open Device Manager on Windows & look for Other > Android device.If it is found, This means Windows 10 is not having proper drivers to recognize fastboot device. Now install "OnePlus_USB_Drivers_Setup.exe" & it will show pop up for installing driver & after accepting(this is blocked due to signature verification in normal situation), Android device will be recognized in fastboot mode.

Giri Prasad said:
This worked for me as well. Just to make it clear, rephrasing his reply. After disabling signature verification on windows 10, connect your phone in fastboot mode & open Device Manager on Windows & look for Other > Android device.If it is found, This means Windows 10 is not having proper drivers to recognize fastboot device. Now install "OnePlus_USB_Drivers_Setup.exe" & it will show pop up for installing driver & after accepting(this is blocked due to signature verification in normal situation), Android device will be recognized in fastboot mode.
Click to expand...
Click to collapse
ugh. I've tried all of these suggestions and still can't get the device listed in adb while in fastboot.
I even used the TOOL ALL IN ONE without success. Funny thing is, that program recognizes my phone being in fastboot and has it listed. But if I try to flash a recovery from there, it opens a command window and ultimately says there was an error in connecting to the device.
Any help is appreciated.

I have a similar problem. I tried to disable the signature. Installed a new Redmi Note 7 driver. The phone is recognized as an Android phone in the device manager. In Orangefox recovery it is recognized with ADB command. In fastboot it is not recognized. In Orangefox I can't format data. So my ROM is not booting up. So I want to flash fastboot ROM with Fastboot but in Fastboot device is not even recognized.
t

puyow18 said:
ugh. I've tried all of these suggestions and still can't get the device listed in adb while in fastboot.
I even used the TOOL ALL IN ONE without success. Funny thing is, that program recognizes my phone being in fastboot and has it listed. But if I try to flash a recovery from there, it opens a command window and ultimately says there was an error in connecting to the device.
Any help is appreciated.
Click to expand...
Click to collapse
Sorry on the late reply. Pretty sure you can only do fastboot boot boot(recovery).img or\and boot_a or boot_b. Wont let you fastboot flash boot.img.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
Thank you so much!

I also had same issue. my redmi note 6 pro and asus zenfone max pro m1 can be detected in adb but not in fastboot. tried everything. changing driver/disble signature verification. also tried virtual box ubuntu/window 7. but not succeeded. It is actually an issue with usb 3. so I bought usb 2 hub. now everything works fine.

Thank you Thank you Thank you Thank you Thank you Thank you...I have been fooling with this all day

Hi, I already solved this issue (but this only works for xiaomi phone (Redmi Note 7 to be specified), for other brands I think need to download your devices flasher/driver tool)
For Xiaomi user only
1. Download Mi Unlock Tool (https://mi-globe.com/download-xiaomi-mi-unlock-tool-all-versions/) (Version 4.5.813.51)
2. Extract the files anywhere you like
3. Run MiUsbDriver.exe to install the driver
4. Try fastboot devices command
I hope this helps you guys. The Mi Unlock Tool also useful to unlock device locked bootloader.
For other devices maybe can follow this tutorial
Fixed: Fastboot not detecting your Android device
Fix the Fastboot not detecting your device. If your device is not detected by the Fastboot then these tricks will really help you.
www.qasimtricks.com

OnePlus 7 pro cannot

Hello my oneplus 7 pro only starts up in fastboot mode. I can't access the recovery or anything else. The bootloader is unlocked but i can't seem to install anything can someone help please.

seanbwoi said:
The bootloader is unlocked but i can't seem to install anything
Click to expand...
Click to collapse
This statement doesn't really mean anything without specific info on what you tried to install, details on the method/steps, and specific results (error messages, other outcomes, etc.).
I'd suggest installing the stock fastboot ROM, but for all I know you already tried it: https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424

I had evolution x installed it asked to update which i did but when the update was installed i got stuck on a bootloop. I have tried the method you recommended it didn't work. I am unsure of which version to installl. I can't seem to get to use any of the msmdownloadtool because once i connect my phone to a usb cable even when its off it turns on automatically and goes to fastboot mode.

I am stuck on the fastboot screen when i turn off my phone if the usb is connected it just reboots to fastboot mode how can i stop it from doing that so that i can try to use the msmtool and secondly how do i find out which version i need i can't access anything except the fastboot mode.

Fastboot not working on samsung j6

So I am trying to use the fastboot package on my samsung j600gt but it doesnt even redognize the device when I type fastboot devices.
adb devices works normaly.
After checking the device management on windows the usb drivers are up to date.
Also the bootlaoder was arrived by adb reboot bootloader . Any thougjt on what can be done to make fastboot work normally?.

Fastboot doesn't work on Samsung devices.

jwoegerbauer said:
Fastboot doesn't work on Samsung devices.
Click to expand...
Click to collapse
Samsung devices don´t have fastboot mode enabled, Samsung calls bootloader to its download mode, that´s different.
What are you trying to do?

SubwayChamp said:
Samsung devices don´t have fastboot mode enabled, Samsung calls bootloader to its download mode, that´s different.
What are you trying to do?
Click to expand...
Click to collapse
Hello. Was trying to flash the TWRP. As trough Odin it doesnt work due to rmm lockrenormal. Even after OEM unlock and the 7 days

Owyeqt said:
Hello. Was trying to flash the TWRP. As trough Odin it doesnt work due to rmm lockrenormal. Even after OEM unlock and the 7 days
Click to expand...
Click to collapse
No. in this state you can´t, first try to bypass that, there are some forums with some tricks.

Cannot get oem unlock token oneplus 8 tmobile (in2017)

So I purchased a tmobile op8 and it arrived yesterday, after setting up the phone and network unlocking (which happened basically instantaneously after applying for it which i found odd), I am currently trying to unlock bootloader in the hopes of converting it to the international firmware. I am on software version 11.0.5.7.IN55CB
The problem I am facing is that whenever i try to do "adb devices" while the phone is powered on it works and lists it, but when the phone is in fastboot mode it does not list the device. Also when i do "fastboot oem get_unloock_code" it gets stuck at waiting for devices. I have read through numerous posts both here and on the op forums talking about this and some listed solutions such as going into windows optional updates and updating google bootloader or something, while others said to check that bootloader is unlocked (i did both and didnt work). Any tips? Also, could someone please link to the correct adb and driver downloads as I am getting mixed results when searching which is the correct download.

Just need to update drivers friend. Follow carefully.
1. Download Google fastboot drivers, unzip to get "usb_driver" folder
2. Right click file "android_winusb" and select install. Press OK on confirmation dialog.
3. Boot phone into fastboot, and connect to PC
4. Open the device manager on PC, and look for android device. Should have an orange triangle next to it
5. Right click that -> Update driver -> Browse my computer -> let me pick from a list -> Android Bootloader Interface
After success message fastboot commands will work. I'd also recommend using the lastest Fastboot Tools from Google if you have any more issues.
Have fun waiting 1-2 weeks for your unlock_code.bin file. F&^% T-Mobile lmao.

FoxyDrew said:
Just need to update drivers friend. Follow carefully.
1. Download Google fastboot drivers, unzip to get "usb_driver" folder
2. Right click file "android_winusb" and select install. Press OK on confirmation dialog.
3. Boot phone into fastboot, and connect to PC
4. Open the device manager on PC, and look for android device. Should have an orange triangle next to it
5. Right click that -> Update driver -> Browse my computer -> let me pick from a list -> Android Bootloader Interface
After success message fastboot commands will work. I'd also recommend using the lastest Fastboot Tools from Google if you have any more issues.
Have fun waiting 1-2 weeks for your unlock_code.bin file. F&^% T-Mobile lmao.
Click to expand...
Click to collapse
Thanks, worked like a charm. Now to wait 7 business days fml

if you just want the bootloader unlocked there's another way to do it instantly using EDL it's how I unlocked mine , instructions and files are here.. only works on Android 11 btw https://androidfilehost.com/?fid=7161016148664833753 if you really don't feel like installing edl and what not there is a Linux live distro that's already ready to go on the edl GitHub page you can download but just forewarning it's extremely glitchy and not used friendly lol if you need help , I can help you tho just lmk

PrivyetCyka said:
if you just want the bootloader unlocked there's another way to do it instantly using EDL it's how I unlocked mine , instructions and files are here.. only works on Android 11 btw https://androidfilehost.com/?fid=7161016148664833753 if you really don't feel like installing edl and what not there is a Linux live distro that's already ready to go on the edl GitHub page you can download but just forewarning it's extremely glitchy and not used friendly lol if you need help , I can help you tho just lmk
Click to expand...
Click to collapse
would i be able to convert to international firmware with this?
also at the end of instructions it states "***** i have not had any luck being able to flash custom roms onto this device even with it unlocked so be forewarned *****" Does this mean that only using this method does not allow for custom roms, or would waiting for tmobile unlock, converting to international firmware also not work with roms?
If roms dont work on this model even after flashing international firmware then im probably not even going to unlock lol

DamianF7 said:
would i be able to convert to international firmware with this?
also at the end of instructions it states "***** i have not had any luck being able to flash custom roms onto this device even with it unlocked so be forewarned *****" Does this mean that only using this method does not allow for custom roms, or would waiting for tmobile unlock, converting to international firmware also not work with roms?
If roms dont work on this model even after flashing international firmware then im probably not even going to unlock lol
Click to expand...
Click to collapse
i have t-m version and i have converted it to international software firmware also gets changed but by your self you won't be able to get 2 sim support because there is only one imei in phone. all the rom's work exacly the same as they do on global version not a single difference currently running a12 aex rom no problems at all

DamianF7 said:
would i be able to convert to international firmware with this?
also at the end of instructions it states "***** i have not had any luck being able to flash custom roms onto this device even with it unlocked so be forewarned *****" Does this mean that only using this method does not allow for custom roms, or would waiting for tmobile unlock, converting to international firmware also not work with roms?
If roms dont work on this model even after flashing international firmware then im probably not even going to unlock lol
Click to expand...
Click to collapse
don't forget to backup your persist.img there is some % chance it may get lost and you will have to recalibrate firngerprint sensor also back up the modem.img from twrp beacause that's has imei of your phone and if somehow you get your phone hardbricked that would be nice thing to have as a peace of mind

d.tat said:
don't forget to backup your persist.img there is some % chance it may get lost and you will have to recalibrate firngerprint sensor also back up the modem.img from twrp beacause that's has imei of your phone and if somehow you get your phone hardbricked that would be nice thing to have as a peace of mind
Click to expand...
Click to collapse
Can this be done without TWRP or does this have to be done after I root?

DamianF7 said:
Can this be done without TWRP or does this have to be done after I root?
Click to expand...
Click to collapse
you can backup persist without twrp. i'm sure modem could be backed up without twrp too but that's how i did it even tho i did not need persist nor modem image but i would suggest you do it anyways just to be safe booting into twrp in not hard at all you have to do is go info fastboot and through adb file boot into recovery ( fastboot boot "recovery" ) device will reboot in twrp and from there you just backup persist and modem take that file and save it on your computer
also important note for android 10 use twrp 3.4 and for android 11 use 3.6 and most importantly if you read the instructions on converting to global or installing twrp or custom rom carefully it will work 100% i was lazy and did it old way i used to do it on some other android phones and bricked few times but it was all good with msm tool you could restore phone from almost every state that's what made oneplus great

DamianF7 said:
Can this be done without TWRP or does this have to be done after I root?
Click to expand...
Click to collapse
no root needed to install or boot into twrp

d.tat said:
you can backup persist without twrp. i'm sure modem could be backed up without twrp too but that's how i did it even tho i did not need persist nor modem image but i would suggest you do it anyways just to be safe booting into twrp in not hard at all you have to do is go info fastboot and through adb file boot into recovery ( fastboot boot "recovery" ) device will reboot in twrp and from there you just backup persist and modem take that file and save it on your computer
also important note for android 10 use twrp 3.4 and for android 11 use 3.6 and most importantly if you read the instructions on converting to global or installing twrp or custom rom carefully it will work 100% i was lazy and did it old way i used to do it on some other android phones and bricked few times but it was all good with msm tool you could restore phone from almost every state that's what made oneplus great
Click to expand...
Click to collapse
Ok, thanks for clarification

FoxyDrew said:
Just need to update drivers friend. Follow carefully.
1. Download Google fastboot drivers, unzip to get "usb_driver" folder
2. Right click file "android_winusb" and select install. Press OK on confirmation dialog.
3. Boot phone into fastboot, and connect to PC
4. Open the device manager on PC, and look for android device. Should have an orange triangle next to it
5. Right click that -> Update driver -> Browse my computer -> let me pick from a list -> Android Bootloader Interface
After success message fastboot commands will work. I'd also recommend using the lastest Fastboot Tools from Google if you have any more issues.
Have fun waiting 1-2 weeks for your unlock_code.bin file. F&^% T-Mobile lmao.
Click to expand...
Click to collapse
Ive run into an issue with edl mode and you seem knowledgeable. I tried to flash the international firmware with an unlocked bootloader but it turned out to be an older build and now my phone is in crash dump mode. I planned on using msmtool to downgrade to android 10 and just restart but my phone isnt detected by my pc even though i have the qualcomm drivers installed. Any tips?
edit: btw can still access fastboot mode (download mode)
so phone is recognized in fastboot but not as qhusnhub or whatever its supposed to be, its just called oneplus android bootloader interface

DamianF7 said:
Ive run into an issue with edl mode and you seem knowledgeable. I tried to flash the international firmware with an unlocked bootloader but it turned out to be an older build and now my phone is in crash dump mode. I planned on using msmtool to downgrade to android 10 and just restart but my phone isnt detected by my pc even though i have the qualcomm drivers installed. Any tips?
edit: btw can still access fastboot mode (download mode)
so phone is recognized in fastboot but not as qhusnhub or whatever its supposed to be, its just called oneplus android bootloader interface
Click to expand...
Click to collapse
EDL mode can be tricky. This one's not a guarantee but it always works for me.
1. Download LinageOS recovery. Make sure you put it in your fastboot/platform-tools folder.
2. Flash that recovery in fastboot mode (unlock bootloader first if you need to) with the command "fastboot flash recovery lineage-18.1-20211218-recovery-instantnoodle.img"
3. Now boot into recovery, select advanced options, and enable ADB.
4. Now you have full adb access. Make sure you're plugged in and use this command on your PC. "adb reboot edl"
5. Check MSM, should be detected now if the right drivers are installed. If not, try combinations of different USB ports and different cables (you'd be surprised)
A lot of the tutorials on here on how to get a T-Mobile version to Global firmware are wonky methods or outdated, so let me know if you continue to have issue with that.

FoxyDrew said:
EDL mode can be tricky. This one's not a guarantee but it always works for me.
1. Download LinageOS recovery.
2. Flash recovery in fastboot mode (unlock bootloader first if you need to) with the command "fastboot flash recovery NAMEOFFILE.img"
3. Now boot into recovery, select advanced options, and enable ADB.
4. Now you have full adb access. Use this command "adb reboot edl"
5. Check MSM, should be detected now if the right drivers are installed. If not, try combinations of different USB ports and different cables (you'd be surprised)
A lot of the tutorials on here on how to get a T-Mobile version to Global firmware are wonky methods or outdated, so let me know if you continue to have issue with that.
Click to expand...
Click to collapse
Thanks for the reply man. Believe it or not this is exactly what I did lol. Got it working again and am now rooted on international oos 11.

FoxyDrew said:
Just need to update drivers friend. Follow carefully.
1. Download Google fastboot drivers, unzip to get "usb_driver" folder
2. Right click file "android_winusb" and select install. Press OK on confirmation dialog.
3. Boot phone into fastboot, and connect to PC
4. Open the device manager on PC, and look for android device. Should have an orange triangle next to it
5. Right click that -> Update driver -> Browse my computer -> let me pick from a list -> Android Bootloader Interface
After success message fastboot commands will work. I'd also recommend using the lastest Fastboot Tools from Google if you have any more issues.
Have fun waiting 1-2 weeks for your unlock_code.bin file. F&^% T-Mobile lmao.
Click to expand...
Click to collapse
Just wanted to say that this solved my issue of not being able to make it past the reboot into fastboot when flashing from TMo to Global using the flash-all.bat guides. I ran the batch file on a newly MSM'd 10.5.22 and when it got stuck at "waiting for device" I followed these steps and as soon as the driver was installed the batch file kicked back in and finished the flashing. Cheers!

SilverZero said:
Just wanted to say that this solved my issue of not being able to make it past the reboot into fastboot when flashing from TMo to Global using the flash-all.bat guides. I ran the batch file on a newly MSM'd 10.5.22 and when it got stuck at "waiting for device" I followed these steps and as soon as the driver was installed the batch file kicked back in and finished the flashing. Cheers!
Click to expand...
Click to collapse
Glad you got it man, worth all the trouble to get to a clean version of OOS without T-MO's junk and spying xD

FoxyDrew said:
EDL mode can be tricky. This one's not a guarantee but it always works for me.
1. Download LinageOS recovery. Make sure you put it in your fastboot/platform-tools folder.
2. Flash that recovery in fastboot mode (unlock bootloader first if you need to) with the command "fastboot flash recovery lineage-18.1-20211218-recovery-instantnoodle.img"
3. Now boot into recovery, select advanced options, and enable ADB.
4. Now you have full adb access. Make sure you're plugged on and use this command on your PC. "adb reboot edl"
5. Check MSM, should be detected now if the right drivers are installed. If not, try combinations of different USB ports and different cables (you'd be surprised)
A lot of the tutorials on here on how to get a T-Mobile version to Global firmware are wonky methods or outdated, so let me know if you continue to have issue with that.
Click to expand...
Click to collapse
Thanks SO MUCH for this!! This is the only thing that allowed me to get into EDL Mode. I'm a bit stuck using MSM though. It shows my device as connected, but when I click the "Target" dropdown O2 is not an option. The only option I see is TMO. Any ideas?
UPDATE: i was able to get MSM going. Selecting the target was not needed, just needed to reboot the phone into EDL again and quickly press Start.
I'm back to stock now and just unlocked my bootloader again.
I now have a follow up question: My goal is to install Pixel Experience on my OPO8. Do I need to flash the Global ROM first or can I go straight into Pixel Experience?
UPDATE 2: no matter what I try flashing to my device I always end up getting "not allowed" errors with the critical partition. I've done the fresh MSM process three times already and always end up hitting these critical partition errors when trying to flash the global rom (or any other rom for that matter). any ideas?

nmuntz said:
Thanks SO MUCH for this!! This is the only thing that allowed me to get into EDL Mode. I'm a bit stuck using MSM though. It shows my device as connected, but when I click the "Target" dropdown O2 is not an option. The only option I see is TMO. Any ideas?
UPDATE: i was able to get MSM going. Selecting the target was not needed, just needed to reboot the phone into EDL again and quickly press Start.
I'm back to stock now and just unlocked my bootloader again.
I now have a follow up question: My goal is to install Pixel Experience on my OPO8. Do I need to flash the Global ROM first or can I go straight into Pixel Experience?
UPDATE 2: no matter what I try flashing to my device I always end up getting "not allowed" errors with the critical partition. I've done the fresh MSM process three times already and always end up hitting these critical partition errors when trying to flash the global rom (or any other rom for that matter). any ideas?
Click to expand...
Click to collapse
Do you have a T-Mobile device? If so you SHOULD be selecting "TMO" from the dropdown in MSM. Not O2 or leaving it blank. If you don't have a T-Mobile device, your using the wrong MSM tool as TMO shouldn't be an option.
Did you unlock your bootloader after MSMing back to stock? MSM Tool will automatically lock your bootloader. Also what recovery are you using to try to flash ROMs?
Also PixelExperience is dead for op8 it stopped getting updates. I'd recommend HavocOS for a "Pixel Experience". Also a well polished ROM in general.

FoxyDrew said:
Do you have a T-Mobile device? If so you SHOULD be selecting "TMO" from the dropdown in MSM. Not O2 or leaving it blank. If you don't have a T-Mobile device, your using the wrong MSM tool as TMO shouldn't be an option.
Did you unlock your bootloader after MSMing back to stock? MSM Tool will automatically lock your bootloader. Also what recovery are you using to try to flash ROMs?
Also PixelExperience is dead for op8 it stopped getting updates. I'd recommend HavocOS for a "Pixel Experience". Also a well polished ROM in general.
Click to expand...
Click to collapse
I'm pretty sure that this is a T-Mobile device. It registers as IN2017 which matches the description of the phone I bought off amazon but not exactly sure how else can i verify this.
I did unlock the bootloader after MSMing back to stock. One thing I noticed is that the stock image that MSM flashed has Sprint branding and not T-Mobile. maybe i'm using the wrong MSM tool? I'm using the one from this guide
I just re-did MSM; this time selecting TMO and I still got Sprint branding. is this expected?
I've been trying with multiple recoverys: the stock one, TWRP and the one that pixelexperience had. The LineageOS one you provided I only used for doing the ADB thing to boot into EDL. What recovery do you recommend I use?
I did read about PixelExperience being dead so downloaded Havoc.
can you please confirm if I should be flashing the Global ROM before flashing HavocOS? regarding the critical partition errors any ideas whats causing those?
last question is regarding adb/fastboot - been reading different things about what version to use. been doing all my last experiments using the ones from https://developer.android.com/studio/releases/platform-tools but got the same results. sorry to spam you with so many questions - appreciate your help!

nmuntz said:
I'm pretty sure that this is a T-Mobile device. It registers as IN2017 which matches the description of the phone I bought off amazon but not exactly sure how else can i verify this.
I did unlock the bootloader after MSMing back to stock. One thing I noticed is that the stock image that MSM flashed has Sprint branding and not T-Mobile. maybe i'm using the wrong MSM tool? I'm using the one from this guide
I just re-did MSM; this time selecting TMO and I still got Sprint branding. is this expected?
I've been trying with multiple recoverys: the stock one, TWRP and the one that pixelexperience had. The LineageOS one you provided I only used for doing the ADB thing to boot into EDL. What recovery do you recommend I use?
I did read about PixelExperience being dead so downloaded Havoc.
can you please confirm if I should be flashing the Global ROM before flashing HavocOS? regarding the critical partition errors any ideas whats causing those?
last question is regarding adb/fastboot - been reading different things about what version to use. been doing all my last experiments using the ones from https://developer.android.com/studio/releases/platform-tools but got the same results. sorry to spam you with so many questions - appreciate your help!
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Click to collapse
I've never seen that MSM tool, but the one I use doesn't have any Sprint files at all. Not sure where you found that MSM but use this one for future reference.
No you don't need to flash global before a ROM.