Develop Bugs

[Q] Unable to fix bootloop - even tried STOCK flash in fastboot. No luck.

Hey guys,
Long time lurker, ROM user since the Galaxy S days.
Weird, intractable bootloop problem here. Gets to boot animation sometimes gets to the "upgrading android" screen, then bootloops in a few seconds after upgrading a few apps. Usually bootloops during the boot animation (doesn't matter what ROM or Stock ROM I try). Ocassionally gets to my "SIM PIN" screen, then reboots before I have a chance to enter anything.
Normal State have Cyanogenmod and Franco Kernel running buttery smooth. (CM10.1M3 Snapshot + Franco 376 when problem started)
Problem Started When I tried to update CM to the new RC1 from the Cyanogenmod upgrade button in "settings". I had SuperSU installed overtop the built-in superuser. Everything was working fine.
What I have tried:
Have latest CWM: Have flashed, reflashed, wiped and re-wiped everything imaginable through CWM. All Caches, system sdcard, you name it, if it's an option in CWM I have tried formatting or wiping it and reflashing a ROM.
ROMs I have tried - CM10.1M3 Snapshot, CM10.1RC1 CM10.1RC2, ParanoidAndroid 3.5+ (Latest), Bigxie Maguro Latest.
Finally I got fed up and decided to go back to STOCK, unrooted, unlocked using fastboot.
I did:
> fastboot erase boot
> fastboot erase cache
> fastboot erase recovery
> fastboot erase system
> fastboot erase userdata
> fastboot flash bootloader magurobootloader.img
> fastboot reboot-bootloader
> fastboot flash radio radioxxlj1.img
> fastboot reboot-bootloader
> fastboot -w update image-maguro-jdq39.zip
And after booting back into the STOCK google recovery (man I haven't seen that screen in AGES) and resetting factory clearing cache. Low and behold -
STILL BOOT LOOPS!!!! What the hell!?!
I'm at my wits end. Any suggestions would be great. What am I forgetting here?! I am absolutely desperate.

What is in the update image and where did you get it? I'd flash everything manually, skip the update command.

bodh said:
What is in the update image and where did you get it? I'd flash everything manually, skip the update command.
Click to expand...
Click to collapse
Ok good idea, I'll try. The update image was the stock image from google (can't post link - low post count) I just didn't remember the filenames when I was making the original post - but they are the official STOCK images - for the radio, the bootloader and the ROM.

Vihsadas said:
Ok good idea, I'll try. The update image was the stock image from google (can't post link - low post count) I just didn't remember the filenames when I was making the original post - but they are the official STOCK images - for the radio, the bootloader and the ROM.
Click to expand...
Click to collapse
Okay I tried flashing boot, system, userdata, and recovery manually with fastboot flash and after that I STILL get the rebootloop from google logo to boot animation to google logo. So weird.
Any other ideas?

Vihsadas said:
Okay I tried flashing boot, system, userdata, and recovery manually with fastboot flash and after that I STILL get the rebootloop from google logo to boot animation to google logo. So weird.
Any other ideas?
Click to expand...
Click to collapse
So decided to try TWRP just to see...well I dunno.
Interstingly enough when I got to hit "reboot" in TWRP it says "OS not installed!!" which is weird because I basically flashed the stock everything 4.2.2 (bootloader recovery, system, boot, everything) from fastboot. Then JUST flashed the TWRP recovery.
I really don't know what to make of this. I just tried keeping the battery out for like 2 minutes, then going back into fastboot and manually flashing:
bootloader
boot
radio
recovery
system
userdata
relocked bootloader
of the STOCK google maguro 4.2.2 (MD5 sum is good. It checked out)
And I still get a continuous reboot loop that doesn't even get past the "X" animation screen. Very ocassionally (1/10) it does get past that screen and I get to the screen where you choose your language, but right when I choose my language, the phone reboots and then continues the loop.
Honestly...Unless someone has another idea, I think I'm going to get another phone tomorrow and pray I'm under warranty. I hate to do it, because I've never had to do that before through all my flashing/ROM adventures...but I don't know what else to do. I've been using sideload for everything (except of course the fastboot flashing back to stock), but I doubt that has anything to do with it...I dunno crap.
anyone have any words of advice?

One thing I thought i might work was redoing the partition table in Odin. So I tried this method:
http://forum.xda-developers.com/showthread.php?t=2065470 (Thanks to Samersh72)
ODIN worked perfectly, download mode worked well, installed fine, and...
still bootloops!
Sometimes gets to "updating android" does a few apps, then bootloops. Once got to the screen where I select language, and before I could select anything - bootloop!
Do you guys think this is hardware? Right now I've installed stock 4.2.2 through ODIN and locked the bootloader in anticipation of returning the phone...

give a try to omap flash
Good Luck

samersh72 said:
give a try to omap flash
Good Luck
Click to expand...
Click to collapse
I looked into the OMAP flash method - that's some hardcore stuff. It looks like it's more for phones that can't access recovery, or hard seemingly bootbricked. I can actually do all of those things with my phone - I can write a new recovery no problem, I have fastboot access (Works well), I can even seemingly install ROMs - for instance the cyanogenmod boot animation plays fine - but everything boot loops.
I'm a bit worried to try OMAP Flash because it seems from the thread that some people are having their IMEI numbers erased or set to generic and I don't want that to happen since I'm actually still under warranty right now...
Do you think it's worth it to try?

Vihsadas said:
I looked into the OMAP flash method - that's some hardcore stuff. It looks like it's more for phones that can't access recovery, or hard seemingly bootbricked. I can actually do all of those things with my phone - I can write a new recovery no problem, I have fastboot access (Works well), I can even seemingly install ROMs - for instance the cyanogenmod boot animation plays fine - but everything boot loops.
I'm a bit worried to try OMAP Flash because it seems from the thread that some people are having their IMEI numbers erased or set to generic and I don't want that to happen since I'm actually still under warranty right now...
Do you think it's worth it to try?
Click to expand...
Click to collapse
you tried almost everything.... still on warranty:good:, everything is stock, so what are you waiting for, take it to service center

samersh72 said:
you tried almost everything.... still on warranty:good:, everything is stock, so what are you waiting for, take it to service center
Click to expand...
Click to collapse
Yeah you're right. OK done.

While I agree that the safest route is to return the device to warranty, omapflash is a tool which communicates with omap chip before even fastboot/bootloader is installed.
Have you tried viewing logcat/dmesg while device is booting to see why and/or its bootlooping?
Sent from my Nexus

bk201doesntexist said:
While I agree that the safest route is to return the device to warranty, omapflash is a tool which communicates with omap chip before even fastboot/bootloader is installed.
Have you tried viewing logcat/dmesg while device is booting to see why and/or its bootlooping?
Sent from my Nexus
Click to expand...
Click to collapse
I can't seem to get at logcat from this state. even if I try adb -d logcat or something similar it doesn't work. It doesn't pick up the log from the boot. Is it because USB debugging is disabled by default on the stock OS?

Vihsadas said:
I can't seem to get at logcat from this state. even if I try adb -d logcat or something similar it doesn't work. It doesn't pick up the log from the boot. Is it because USB debugging is disabled by default on the stock OS?
Click to expand...
Click to collapse
Yes, but There's a build.prop property that enables ADB debugging.. Since you have access to a custom recovery, you can mount /system rw and make your changes there.
Sent from my Nexus

Similar issue
Hey guys,
I am having a similar issue with my Nexus. It is running Phandroid 3 and one day just locked up, rebooted, and shortly after reboot (15-30 sec. after the OS loads) it freezes. I can still boot into CWM recovery and into fastboot mode, and have tried to flash it with the stock rom and bootloader. I also tried an OMAP flash, but that did not change anything as well. The odd thing is that when I try to flash a new rom (I have tried stock and other custom roms) it flashes as if everything is fine, but when I reboot it still has the phandroid rom on it. Another odd note is that when phandroid boots it notifies me that I have an incoming text message, but I removed the SIM card over a month ago. I have been struggling with this and would love any thoughts or opinions anyone has to offer. Thanks a lot!

lsal25 said:
Hey guys,
I am having a similar issue with my Nexus. It is running Phandroid 3 and one day just locked up, rebooted, and shortly after reboot (15-30 sec. after the OS loads) it freezes. I can still boot into CWM recovery and into fastboot mode, and have tried to flash it with the stock rom and bootloader. I also tried an OMAP flash, but that did not change anything as well. The odd thing is that when I try to flash a new rom (I have tried stock and other custom roms) it flashes as if everything is fine, but when I reboot it still has the phandroid rom on it. Another odd note is that when phandroid boots it notifies me that I have an incoming text message, but I removed the SIM card over a month ago. I have been struggling with this and would love any thoughts or opinions anyone has to offer. Thanks a lot!
Click to expand...
Click to collapse
I dont know if you already did but try to wipe /system also and then flash a ROM.
Sent from my Galaxy Nexus using XDA Premium HD app

Boot Looping Help Please

I purchased a 5x for my wife so she can get on Project Fi. They said it was stuck boot looping, thinking I could solve the problem.
Here are the basics.
-Yes, I can get into boot loader (the menu of start, recovery, etc), but I can't get into TWRP. Tried flashing TWRP a few times and nothing. SkipSoft recognizes that its installed though.
-After bootlooping for awhile, it will load normally and work fine. However it wants to update to the newest version of android. I run the ota and back to bootlooping. It will show the android dude and say "error". Will eventually start bootlooping and then boot normally.
-I have flashed different stock versions. I tried the newest, the second to newest and the last M available. All will flash but continue the bootlooping.
Bootlooping can be anywhere from 1 minute to 10+.
The device will also first display something like, "Your device software can't be checked for corruptions. Please lock the bootloader"
But it'll show up whether the bootloader is locked or not.
The phone will freeze at some point. Whether right away or after 5 minutes. It freezes and then restarts and goes through the bootloop again.
So what else can/should I do? I've never dealt with Kernels but wondering if the last owner did something to them. Is there a way to flash stock kernels just incase or is this done when I flash a Google Factory Stock Image?
Would flashing a non-stock rom be a good idea?
Thanks

So I tried sideloading. I was able to get into the stock recovery. I tried wiping cache and data, then tried installing the newest stock rom.
Everything seemed to work. Then I had to restart. A message popped up after the same "Your device software can't be checked for corruptions. Please lock the bootloader". It had the title in blue stating "Encryption unsuccessful".
Then said, "Encryption was interrupted and can't complete. As a result, the data on your phone is no longer accessible. To resume using your phone you need to perform a factory reset. When you set up your phone after the reset, you'll have an opportunity to restore any data that was backed up to your Google Account."
Then there is a single button that says, "Reset Phone".
Problem still persists.
Help please...

Why did you bought a bootlooped phone?

Sin Stalker said:
I purchased a 5x for my wife so she can get on Project Fi. They said it was stuck boot looping, thinking I could solve the problem.
Here are the basics.
-Yes, I can get into boot loader (the menu of start, recovery, etc), but I can't get into TWRP. Tried flashing TWRP a few times and nothing. SkipSoft recognizes that its installed though.
-After bootlooping for awhile, it will load normally and work fine. However it wants to update to the newest version of android. I run the ota and back to bootlooping. It will show the android dude and say "error". Will eventually start bootlooping and then boot normally.
-I have flashed different stock versions. I tried the newest, the second to newest and the last M available. All will flash but continue the bootlooping.
Bootlooping can be anywhere from 1 minute to 10+.
The device will also first display something like, "Your device software can't be checked for corruptions. Please lock the bootloader"
But it'll show up whether the bootloader is locked or not.
The phone will freeze at some point. Whether right away or after 5 minutes. It freezes and then restarts and goes through the bootloop again.
So what else can/should I do? I've never dealt with Kernels but wondering if the last owner did something to them. Is there a way to flash stock kernels just incase or is this done when I flash a Google Factory Stock Image?
Would flashing a non-stock rom be a good idea?
Thanks
Click to expand...
Click to collapse
When my Nexus 5x got into bootloop, I sent it to LG and they had to change the whole circuit. So yeah.

When you flash Google Factory Image, it flash the stock kernel.
If you have warranty, then send it to Google/LG. If you haven't got, then you're in problem. New motherboard needed, but it's expensive.

See the following thread for more info.
https://forum.xda-developers.com/nexus-5x/help/5x-bootloop-cause-fix-t3476794/

khalifakk said:
Why did you bought a bootlooped phone?
Click to expand...
Click to collapse
Cause its cheaper.

Sin Stalker said:
Cause its cheaper.
Click to expand...
Click to collapse
Then face the consequences...

khalifakk said:
Then face the consequences...
Click to expand...
Click to collapse
What consequences?

Hardware bootloop can't be fix by software.

Duckscreen said:
Hardware bootloop can't be fix by software.
Click to expand...
Click to collapse
Exactly. Everyone has either been able to get a replacement under warranty or was pretty much screwed if it was out of warranty.
Sent from my Nexus 5X using Tapatalk

Sin Stalker said:
What consequences?
Click to expand...
Click to collapse
A bootlooped phone for ever....

I recommend you will install kernel adiutor app after try rooting
I recommend you will install kernel adiutor app after try rooting
Almost I got no bootloop even no random reboot nexus 5x's state

Getting "Your device is corrupt. It can't be trusted and may not work properly"

Getting "Your device is corrupt. It can't be trusted and may not work properly"
Hey guys
I tried playign with the new magisk. Decided to factory reset and ran the script, and keep getting:
Getting "Your device is corrupt. It can't be trusted and may not work properly"
Any suggestions? I thought factory reset, literally reset everything...
Thanks in advance

docluv01 said:
Hey guys
I tried playign with the new magisk. Decided to factory reset and ran the script, and keep getting:
Getting "Your device is corrupt. It can't be trusted and may not work properly"
Any suggestions? I thought factory reset, literally reset everything...
Thanks in advance
Click to expand...
Click to collapse
A factory reset erases the partition where user data is stored. It does not touch any other partition. You're getting that message because the phone detects that the boot image is no longer stock. If you want to undo the changes you have made, you'll have to flash the stock Google image.

Ok, SO teh message is normal?
I flashed factory 8.0.0, and I get the same message,
TheSt33v said:
A factory reset erases the partition where user data is stored. It does not touch any other partition. You're getting that message because the phone detects that the boot image is no longer stock. If you want to undo the changes you have made, you'll have to flash the stock Google image.
Click to expand...
Click to collapse

docluv01 said:
Ok, SO teh message is normal?
After I did a factory reset, I got the message, clicked power when it asked to, then phone just sits at the google screen.
Click to expand...
Click to collapse
I haven't had a chance to test Magisk on this phone yet (I returned mine and am waiting on the replacement) but when I've used Magisk in the past, the first boot took a really long time. Give it like 10 minutes or so. If it never makes it past that, something went wrong and you should flash the stock image.
Oh wait, you get the same message if you flash the stock image? Well in that case, I'm not sure what's wrong. You may need to re-lock the bootloader before that message goes away, but make sure you're on 100% stock software before that happens. It might have something to do with the fact that Pixel devices have A and B firmware slots, so if you bring A back to stock, B might still have the Magisk patched image on it. Someone more familiar with Pixel devices should chime in.

TheSt33v said:
I haven't had a chance to test Magisk on this phone yet (I returned mine and am waiting on the replacement) but when I've used Magisk in the past, the first boot took a really long time. Give it like 10 minutes or so. If it never makes it past that, something went wrong and you should flash the stock image.
Click to expand...
Click to collapse
Well, to clarify...
I was able to get Magisk to run fine. But decided I wanted fresh stock image, so went to flash stock google image, flash went fine, but at reboot i get the same thing. could this be a slot issue?

docluv01 said:
Well, to clarify...
I was able to get Magisk to run fine. But decided I wanted fresh stock image, so went to flash stock google image, flash went fine, but at reboot i get the same thing. could this be a slot issue?
Click to expand...
Click to collapse
I'm thinking so. I'm not sure what the proper procedure is for designating which slot you're flashing to on the Pixel 2's, but it's possible that you now have 1 slot with stock firmware and 1 slot with the Magisk patched image. For the original Pixel devices, the partition names were boot_a and boot_b. So I think, and someone please correct me if I'm wrong, fastboot flash boot <file> will flash the file to whichever slot is active, but using boot_a and boot_b will flash to those designated slots. So to fix your issue, you need to make sure that both boot_a and boot_b contain stock images.
Keep in mind that I've never owned a Pixel before now (although I'm pretty comfortable with flashing other android devices), and I'm not 100% sure about this, so you might not want to take my advice.

relock the bootloader.

Here is what I did:
Fastboot flashing lock
fastboot flashing lock_critical
then tried running the flash-all.bat, got FAILED being it was locked
SO then I ran
Fastboot flashing unlock
fastboot flashing unlock_critical
ran flash-all.bat, seemed to have gone fine. Phone reboots, then after you get the circle, where it says "erasing", after about 10 seconds it reboots and says "your device is corrupt..."
Ughhh, I hope I didn't brick this thing???

sorry guys, im an ass, i thought i was using teh latest fastboot, but apparently, not
all is good. I wish I was able to delete this thread

docluv01 said:
sorry guys, im an ass, i thought i was using teh latest fastboot, but apparently, not
all is good. I wish I was able to delete this thread
Click to expand...
Click to collapse
What was the fix cuz i am getting this now after flashing the latest factory image...help!! Lol

canemaxx said:
What was the fix cuz i am getting this now after flashing the latest factory image...help!! Lol
Click to expand...
Click to collapse
relock your bootloader

canemaxx said:
What was the fix cuz i am getting this now after flashing the latest factory image...help!! Lol
Click to expand...
Click to collapse
Make sure you have the latest version of adb and fastboot from the developer site.
https://developer.android.com/studio/releases/platform-tools.html

I got the message as soon as I unlocked the bootloader. It's normal

I had this issue with old platform tools and could not get my device to boot no matter how many times I flash-all'ed or changed the current boot slot. Upgrade to the latest platform tools and run the flash-all from that directory. If it's still not working, I also unlocked critical: fastboot flashing unlock_critical , so that the flash-all could flash my bootloader as well.

Like some have said already. This message appears every time you boot after you unlock your bootloader, whether you are still running stock OS or not. Same thing happened on my 6P. Only way to get it to go away is relocking the bootloader. Don't worry though, your device isn't really corrupt. Just a scare tactic by Google.

charesa39 said:
Like some have said already. This message appears every time you boot after you unlock your bootloader, whether you are still running stock OS or not. Same thing happened on my 6P. Only way to get it to go away is relocking the bootloader. Don't worry though, your device isn't really corrupt. Just a scare tactic by Google.
Click to expand...
Click to collapse
This is somewhat true. There are 2 different messages. One that says you are running unsupported software and the color is orange. This message pops up on every boot while the bootloader is unlocked. The other message says your device is corrupt, in red. The phone will not boot. I just ran into this issue while trying to flash the november update
EDIT:
I was able to resolve this by updating adb/fastboot. I updated adb/fastboot before but i guess i did it on my other computer.

So was there any way to fix this without having to relook the bootloader? I've already had to set this phone up a second time after the longest marathon session of trying to get both TWRP and magisk to live happily together on this device, so I'd rather not do it again if it's avoidable.
Literally all I did to cause this is press the button in TWRP to switch to slot A, and after rebooting I immediately got the new scarier message that requires a power button press to boot, after which you get the regular nag about the unlocked BL. The device then hung at the Google padlock screen, so I used the buttons to reboot into BL then tried TWRP. TWRP then hung at the splash screen, so I hooked up to the PC and fastboot booted TWRP. When I tried to switch back to B, strangely, it said I already was. I pressed the button to switch to B anyway, then rebooted. The error happened again, but at least the device boots. I tried rebooting again to see if it had cleared up, but unfortunately not.
I would really like to be rid of this without having to start over. I do have a nandroid but I don't even know if I trust a restore to be successful and potentially make **** worse. Thanks in advance!

Fastboot setactive=_b
Double check exact command but this worked for me.
Make sure you flash boot.img first using
Fastboot flash boot XXX.img
Sent from my Pixel 2 XL using Tapatalk

matt1313 said:
Fastboot setactive=_b
Double check exact command but this worked for me.
Make sure you flash boot.img first using
Fastboot flash boot XXX.img
Sent from my Pixel 2 XL using Tapatalk
Click to expand...
Click to collapse
I was able to switch back and forth between the slots with fastboot. I thought maybe I was getting the error because they had two different boot images installed, so I backed up my boot on side B, and then restored it to slot A. No dice. I still get the error message.

IrocD said:
I was able to switch back and forth between the slots with fastboot. I thought maybe I was getting the error because they had two different boot images installed, so I backed up my boot on side B, and then restored it to slot A. No dice. I still get the error message.
Click to expand...
Click to collapse
Flash boot.img first. Don't select which slot
Then reboot bootloader and fastboot active slot b
Sent from my Pixel 2 XL using Tapatalk

Is it possible to get back to stock ROM at this point?

Sorry in advance if this has been covered elsewhere.
-followed the steps to install a custom rom. unlocked the boot loader, installed twrp, cleared dalvik/data/etc.
-ROM eventually booted up ok, however, I could not connect to project fi with it. (unfortunately, your project fi service can't be activated right now-code t120).
-So, my intention was, ok, I will go ahead and go back to the latest stock. however, booting to recovery it appears to have reverted back to the stock recovery, and adb will not detect the device(fastboot will, but, when trying to run anything, be it to repush twrp, it just hangs. If I try and do the flash-all.bat off of the stock rom zip, it tells me flashing is not allowed for critical partitions, even though it is in fact unlocked. To be safe, I tried both fastboot flashing unlock, and unlock_critical.. both went to a '...' and sat there).
It still boots up and loads fine, I just cannot activate Fi, and cant seem to get anywhere with it otherwise. Any suggestions?
One final question- since i cannot get it to install stock rom via fastboot- if i drop the taimen-opm zip onto the phone directly, can i install it that way? Or am I S.O.L. because i do not have the custom recovery on there anymore?

Okay, what you're going to have to do is.
1. Go into fastboot mode and fastboot boot twrp.img and then flash another rom after doing a factory reset in custom recovery
2. Go into fastboot and flash factory image by downloading it from the google site.

mr.notsotech said:
Okay, what you're going to have to do is.
1. Go into fastboot mode and fastboot boot twrp.img and then flash another rom after doing a factory reset in custom recovery
2. Go into fastboot and flash factory image by downloading it from the google site.
Click to expand...
Click to collapse
Unfortunately that won't work for me. I tried fastboot boot recovery.img (its what I had renamed the twrp img file) and it fails with a data xfer failure, too many links.

otownmarine said:
Unfortunately that won't work for me. I tried fastboot boot recovery.img (its what I had renamed the twrp img file) and it fails with a data xfer failure, too many links.
Click to expand...
Click to collapse
Scratch that. Took some major screwing around (changing usb ports, multiple attempts at getting twrp to stick) but I was finally able to get it to apply the stock ROM and everything seems functional. Thanks.

Use this tool next time, it should help you out. It's worked 100% of the time for myself and I ended up staying on stock after countless minor annoyances with being rooted or using custom roms.
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761

otownmarine said:
Scratch that. Took some major screwing around (changing usb ports, multiple attempts at getting twrp to stick) but I was finally able to get it to apply the stock ROM and everything seems functional. Thanks.
Click to expand...
Click to collapse
Very sad to see we are still having so many USB related issues. We really need to come up with a definitive FAQ me thinks. Glad you got it done! ?

otownmarine said:
Scratch that. Took some major screwing around (changing usb ports, multiple attempts at getting twrp to stick) but I was finally able to get it to apply the stock ROM and everything seems functional. Thanks.
Click to expand...
Click to collapse
Yeah I keep forgetting that twrp is super finicky on this device because of the boot slots (a,b). I'm so happy you got it working. your adb has to be up to date as well.
I learned all of that the hard way as well. I just don't have a good memory of the steps I did. lol. I found that for my usage after trying multiple roms on this device that, stock rom is the best for my battery life and smoothness. I did root though and flashed a custom kernel. But that is only because I love thinking that my kernel is helping my battery life somewhat as well.

Just a heads up the reason you cant use project fi on a custom ROMs is because your probably using the e-sim. The software process behind the e-sim hasn't been worked out for custom ROMs and probably never will (not a big demand for it). You can always order a Sim card from project fi and put it into your phone and that will work with a custom ROMs; I have used project fi on every custom ROMs for Pixel 2 xl there is and no issues.

Help, might have killed my device

Not 100% sure of best place to post this, but I'm getting desperate now...
I'm pretty worried I've killed my device. After following the guide on how to root with Magisk, my phone is stuck on the white "loading" screen with a G logo. I've since tried to restart, but I can either go into fastboot mode or get the white screen when attempting to boot into android.
Tried to flash the latest factory image to fix it, but that couldn't get that to work. Now the phone isn't showing up on adb devices either. panicking a little bit here.
Does anyone know what to do?

ADB won't work unless the phone is booted into Android or in stock recovery for a sideload.
Does your computer recognize the device when you are in Fastboot mode and type "fastboot devices"? Try flashing the factory image again but make sure you have the most up to date platform tools from Google. Old versions are a common cause of issues.
Did you flash TWRP recovery or just boot to it to root? If you still have stock recovery you can try a factory reset from there but any modified images you installed might be the issue.

like Fury said, your platform tools need to be updated, same thing happened to me.

What didn't work when you flashed the factory image? Do you have the latest sdk tools version of fastboot and adb?
Sent from my [device_name] using XDA-Developers Legacy app

fury683 said:
ADB won't work unless the phone is booted into Android or in stock recovery for a sideload.
Does your computer recognize the device when you are in Fastboot mode and type "fastboot devices"? Try flashing the factory image again but make sure you have the most up to date platform tools from Google. Old versions are a common cause of issues.
Did you flash TWRP recovery or just boot to it to root? If you still have stock recovery you can try a factory reset from there but any modified images you installed might be the issue.
Click to expand...
Click to collapse
Thanks so much, this is where I was going wrong. Have gone into recovery and rescued it.
Tried the process again to get Magisk working, but ended up the same although this time the white screen only went on for a while before I got an error saying my data was corrupted. Tbh, after all the stress I'm just going to give up on this and live with the phone in stock. All my drivers and adb were installed and setup today, so everything is up to date.
edit...
Not out of the woods yet. After restarting the phone and going through the setup, it's not detecting the SIM card or any wifi networks. I've installed the OTA and wiped data once more after having this problem, still not resolved.

Nick676 said:
Thanks so much, this is where I was going wrong. Have gone into recovery and rescued it.
Tried the process again to get Magisk working, but ended up the same although this time the white screen only went on for a while before I got an error saying my data was corrupted. Tbh, after all the stress I'm just going to give up on this and live with the phone in stock. All my drivers and adb were installed and setup today, so everything is up to date.
Thanks again for helping.
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It sounds like you are trying to install Magisk v17.1 like I tried. If so you need to use v17.3 beta. If you follow this thread you should be fine. It even tells you what to do for your original problem, just takes some reading and patience.

Misterxtc said:
It sounds like you are trying to install Magisk v17.1 like I tried. If so you need to use v17.3 beta. If you follow this thread you should be fine. It even tells you what to do for your original problem, just takes some reading and patience.
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I tried it with both 17.1 and 17.3, so not sure what the issue is. Seem to have finally booted up properly with wifi and signal working, so hopefully it's all good now. Gonna give up on rooting.

Nick676 said:
Not 100% sure of best place to post this, but I'm getting desperate now...
I'm pretty worried I've killed my device. After following the guide on how to root with Magisk, my phone is stuck on the white "loading" screen with a G logo. I've since tried to restart, but I can either go into fastboot mode or get the white screen when attempting to boot into android.
Tried to flash the latest factory image to fix it, but that couldn't get that to work. Now the phone isn't showing up on adb devices either. panicking a little bit here.
Does anyone know what to do?
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you may want to try to totally uninstalling Magisk frist with the official latest Magisk uninstaller and reboot and then do a complete factory reset. this has helped me in the past.
my new pixel 3XL will be the first Android phone that I owned that will not be rooted.