Database Users

Nexus 4 stuck on boot screen after update

Need some help.
I just sideloaded the 4.3 update to phone and now it's stuck on the 'X' loading screen.
My phone was rooted, but all stock (including the bootloader). I used the sideload ADB command and everything went fine, but the phone now won't boot.
How do I fix this?

did you data wipe(factory reset) before flashing?? if not, you have too.

I applied the OTA...didn't think I had to
Any idea on how I fix it now?
Really don't want to lose all my data

Install a custom recovery and wipe or apply factory image

favaroooo said:
Install a custom recovery and wipe or apply factory image
Click to expand...
Click to collapse
Is there a way I can fix it without wiping everything?

theprodigy85 said:
Is there a way I can fix it without wiping everything?
Click to expand...
Click to collapse
I do not think because you have to change recovery you must unlock the bootloader and unlock bootloader wipe the phone

theprodigy85 said:
Is there a way I can fix it without wiping everything?
Click to expand...
Click to collapse
no, its the data(and other stuff) causing it not to boot. same thing when flashing custom rom, you wipe when fkashing different roms. and going from android 4.2.2 to 4.3, theres many changes, enough to consider it a different rom.

Shoot...I should have done more research before doing this.
I did a factory reset through the stock bootloader...but it's still looping on the 'X' screen.
Can someone walk me through this or point me to a guide?
Bootloader is currently unlocked and I'm able to get into the factory recovery.

theprodigy85 said:
Shoot...I should have done more research before doing this.
I did a factory reset through the stock bootloader...but it's still looping on the 'X' screen.
Can someone walk me through this or point me to a guide?
Bootloader is currently unlocked and I'm able to get into the factory recovery.
Click to expand...
Click to collapse
are you flashing a zip or an img file??

simms22 said:
are you flashing a zip or an img file??
Click to expand...
Click to collapse
Initially, I flashed the OTA zip.
I'm okay with just restoring everything back to factory at this point...

Try to restore using the factory image

theprodigy85 said:
Initially, I flashed the OTA zip.
I'm okay with just restoring everything back to factory at this point...
Click to expand...
Click to collapse
yea, the zip youd want to wipe data/factory reset, then flash the rom. dirty flashing wont help since the changes are big enough.

theprodigy85 said:
Initially, I flashed the OTA zip.
I'm okay with just restoring everything back to factory at this point...
Click to expand...
Click to collapse
I bought my ole lady a Nexus 4 for Valentines day, anyway, today she got the OTA update and let it install the update. Now mind you she is 100% stock, adb debugging was not enabled, and her bootloader was still locked. (She would not let me touch her Nexus 4 lol) When the device rebooted it stuck on Android Upgrading finishing boot. So I said well let me see what I can do, this is what I did to fix it.
I use only Ubuntu so this may not work on windows i do not know. I Booted the device to the bootloader, connected it to my laptop via USB. I opened a terminal and typed in "sudo fastboot devices" and entered my password when promted and this gave me the device ID and fastboot letting me know fastboot was working. I then typed in "sudo fastboot reboot" and the device rebooted but was stuck on the bootanimation. I opened the internal storage up on my laptop in my file explorer and made a copy of her internal storage. Next I booted the device back into the bootloader then opened a terminal and typed in "sudo fastboot oem unlock" and the device gave me the unlock warning and the yes or no options. I selected yes so it would factory reset. After it did the factory reset the device reboot and booted to the setup welcome screen. Hope this helps others, also thanks to my good good friend Ljjehl for reminding me to use "sudo".
Edit: If you open the command promt with Administrative permissions in Windows this will work in Windows as well. Go to C:\Windows\System32\cmd.exe and right click on the cmd.exe file and select run as administrator. Then CD to the location with your fastboot.exe command. Thanks to another good friend TheBr0ken.

Thanks for the help...
I just ended up flashing each of the 4.3 components from the factory image. Just annoyed that I lost everything...

I'm stuck at the same screen. I received the OTA update, I didn't do anything special. My phone is unlocked and rooted (or WAS) but that was months ago, the rest is stock.
I think having encryption on my phone may have made it do this. I don't think Google anticipated doing the update properly for encrypted phones. Now I fear I've lost everything because even if I could connect, all data is encrypted...

similar problem
After starting to OTA update it was going smoothly, i was making breakfast, came back to find my screen at the "starting apps" screen frozen. The little circle that rotated wasnt doing anything so i left it there for awhile longer and still nothing. It would not move off that screen so i held power button down and restarted. now its stuck at the X screen also.

Yeah, I'm stuck there too. Already tried Factory Rest, didn't work. So what can I do?

I was on stock 4.2.2 and unrooted. I used the 'Google Services Framework' hack to force the 4.3 OTA update. The update downloaded successfully, phone restarted to apply the update and then restarted again. And now its stuck at the Google screen and keeps on restarting :crying:
I dont have the USB drivers installed on my PC too.

Same Problem
I have a nexus 4 (stock and unrooted),after 4.3 update,it is lagging during phone lock on/off (2 sec/5 sec).Hence I restarted my phone,and it stuck at "x" logo.Did clean data 3 times and then its working.
The problem is,in 2 days,I have experienced and done above thrice?
What could have gone wrong?

Hi guys,
I've just found how to correct this problem. All you have to do is to correctly wipe your phone before flashing factory image.
So :
Fastboot erase boot
Fastboot erase recovery
Fastboot format cache
Fastboot format system
Fastboot format userdata
I've just unbrick a n4 this way 15 minutes ago.
I have found the problem in recovery where you can see error log saying "cannot mount cache"
So formating correct the issue.
Hope it can help, fingers crossed.
Sent from my Galaxy Nexus using xda premium

Nexus 10 Boot Loop after OTA 4.4.3 Update

I have a Nexus 10, rooted but still running stock. I clicked the 4.4.3 OTA update, it updated, and restarted in a boot loop. No idea what went wrong with the update.
I went to Recovery Mode and did a factory/data reset, but after that completed, it was still in a boot loop. I noticed the system recovery says "K0T49H", which is 4.4.3 that didn't install correctly, so I'm thinking maybe factory reset is out as an option.
I also tried entering Recovery Mode and applying the update via adb, but it says "Fastboot device was not found".
Any ideas on how to get it running again?

Giraffeteria said:
I have a Nexus 10, rooted but still running stock. I clicked the 4.4.3 OTA update, it updated, and restarted in a boot loop. No idea what went wrong with the update.
I went to Recovery Mode and did a factory/data reset, but after that completed, it was still in a boot loop. I noticed the system recovery says "K0T49H", which is 4.4.3 that didn't install correctly, so I'm thinking maybe factory reset is out as an option.
I also tried entering Recovery Mode and applying the update via adb, but it says "Fastboot device was not found".
Any ideas on how to get it running again?
Click to expand...
Click to collapse
It says "fastboot device was not found" because Fastboot is only for when you are in the Bootloader. ADB is for when you are in Recovery, or booted into the Android OS. Since you already did a factory data reset, I would assume you don't mind losing data. If that's the case, just boot into the bootloader and flash the entire factory image for 4.4.3.

charesa39 said:
It says "fastboot device was not found" because Fastboot is only for when you are in the Bootloader. ADB is for when you are in Recovery, or booted into the Android OS. Since you already did a factory data reset, I would assume you don't mind losing data. If that's the case, just boot into the bootloader and flash the entire factory image for 4.4.3.
Click to expand...
Click to collapse
When I go to bootloader, NRT doesn't find the device any more. Is there something else I need to do?

Giraffeteria said:
When I go to bootloader, NRT doesn't find the device any more. Is there something else I need to do?
Click to expand...
Click to collapse
Oh. You're using a toolkit... Sorry, can't help you much then. I'm not a big fan of toolkits for this very reason. It's much easier to figure out what went wrong, and where, when you flash everything manually. However, it sounds like there's a driver issue. Make sure you still have the correct drivers installed. That's all I can think of.

Giraffeteria said:
When I go to bootloader, NRT doesn't find the device any more. Is there something else I need to do?
Click to expand...
Click to collapse
I followed this guide: http://www.androidbeat.com/2013/11/flash-factory-image-nexus-device/ and flashed through the bootloader. Wouldn't have gotten there without your help, though! Thanks!

Giraffeteria said:
I followed this guide: http://www.androidbeat.com/2013/11/flash-factory-image-nexus-device/ and flashed through the bootloader. Wouldn't have gotten there without your help, though! Thanks!
Click to expand...
Click to collapse
NICE! Glad I could help. These Nexus devices are so easy to flash manually, so I don't really see the need for toolkits for this device. I can understand other locked down devices though. After I picked up my Gnex, doing everything manually was how I learned the basics of ADB and Fastboot.

Hi,
Glad to see that you solved your issue, could you please add a [SOLVED] tag to the title now?
~Lord

Bootlooping Nexus

My Nexus 6P is seemingly bootlooping.
I can boot into the bootloader menu but not into recovery. My bootloader is not unlocked so I cannot flash anything.
Issuing the command: "fastboot flashing unlock" does not work nor does "fastboot oem unlock". I cannot flash a custom recovery. Because my bootloader is locked.
Any help would be great.

avansledright said:
My Nexus 6P is seemingly bootlooping.
I can boot into the bootloader menu but not into recovery. My bootloader is not unlocked so I cannot flash anything.
Issuing the command: "fastboot flashing unlock" does not work nor does "fastboot oem unlock". I cannot flash a custom recovery. Because my bootloader is locked.
Any help would be great.
Click to expand...
Click to collapse
You say that your bootloader was not unlocked, so I'm assuming you didn't have developer options turned on and USB debugging checked before fastboot flashing unlock?

Fe Mike said:
You say that your bootloader was not unlocked, so I'm assuming you didn't have developer options turned on and USB debugging checked before fastboot flashing unlock?
Click to expand...
Click to collapse
I don't recall if i had them turned on or not. I know my device was enrolled in the Android beta program.

avansledright said:
I don't recall if i had them turned on or not. I know my device was enrolled in the Android beta program.
Click to expand...
Click to collapse
Do you remember if you modded anything prior to bootloop? The reason you can't unlock bootloader is because USB debugging isn't on. What version of Android were you on when it happened? I believe you can still use google factory Image to restore your phone.

Fe Mike said:
Do you remember if you modded anything prior to bootloop? The reason you can't unlock bootloader is because USB debugging isn't on. What version of Android were you on when it happened? I believe you can still use google factory Image to restore your phone.
Click to expand...
Click to collapse
The last thing i did was installed the new Google camera 4.2 but it worked fine after that.

avansledright said:
The last thing i did was installed the new Google camera 4.2 but it worked fine after that.
Click to expand...
Click to collapse
Since you don't have twrp you probably don't have a backup, which what I'm going to suggest will bring you back to stock and may lose everything. Though it's better than a bricked phone. Since I never did the flash-all.bat you may lose your stuff on internal SD. In this link, download the correct image your phone was on (under angler) and if using windows use the flash-all.bat in fastboot. If you're phone isn't 32 GB, extract all from zip and flash everything except user data. Forgive me for assuming you may be new. https://developers.google.com/android/nexus/images

Fe Mike said:
Since you don't have twrp you probably don't have a backup, which what I'm going to suggest will bring you back to stock and may lose everything. Though it's better than a bricked phone. Since I never did the flash-all.bat you may lose your stuff on internal SD. In this link, download the correct image your phone was on (under angler) and if using windows use the flash-all.bat in fastboot. If you're phone isn't 32 GB, extract all from zip and flash everything except user data. Forgive me for assuming you may be new. https://developers.google.com/android/nexus/images
Click to expand...
Click to collapse
Tried that. Continue to get the "Remote: (device is locked)" error every time it tries to flash a new image.
I'm not worried about losing any data on the phone. everything is backed up in the cloud.

,
avansledright said:
Tried that. Continue to get the "Remote: (device is locked)" error every time it tries to flash a new image.
I'm not worried about losing any data on the phone. everything is backed up in the cloud.
Click to expand...
Click to collapse
Do you get the error on all that you try to flash? Maybe just try the recovery img only to see if you can at least get that. If that works you should be able to sideload ota through recovery. With having a locked bootloader you might be at a loss. But on the flip side, having everything locked and not rooted you should be ok for warranty replacement.

avansledright said:
Tried that. Continue to get the "Remote: (device is locked)" error every time it tries to flash a new image.
I'm not worried about losing any data on the phone. everything is backed up in the cloud.
Click to expand...
Click to collapse
Fastboot is useless since your bootloader is locked. Try to ADB sideload the latest OTA image from Google and see if it will boot.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
Fastboot is useless since your bootloader is locked. Try to ADB sideload the latest OTA image from Google and see if it will boot.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
How would i get into ADB mode without being able to boot into recovery? I thought of this as well but haven't been able to find a way to boot it into an ADB mode

avansledright said:
How would i get into ADB mode without being able to boot into recovery? I thought of this as well but haven't been able to find a way to boot it into an ADB mode
Click to expand...
Click to collapse
Ahh, missed that in your first post. I'm not sure how you can get recovery going if it's bootlooping when you access it.
Sent from my Nexus 5X using Tapatalk

avansledright said:
How would i get into ADB mode without being able to boot into recovery? I thought of this as well but haven't been able to find a way to boot it into an ADB mode
Click to expand...
Click to collapse
Check out this thread at post number 268 they mention using adb through mtp mode when not able to use recovery.
http://forum.xda-developers.com/nexus-6p/help/figure-brick-t3450921/page6

Fe Mike said:
Check out this thread at post number 268 they mention using adb through mtp mode when not able to use recovery.
http://forum.xda-developers.com/nexus-6p/help/figure-brick-t3450921/page6
Click to expand...
Click to collapse
Tried running through those steps. I can't even get a temporary boot of TWRP or stock recovery continues to bootloop even though WugFresh claims it was successful. Tried doing it manually via Fastboot and continue to get the error in flashing.
I just received my replacement phone. So I might just call it a day on this one. :crying:

avansledright said:
Tried running through those steps. I can't even get a temporary boot of TWRP or stock recovery continues to bootloop even though WugFresh claims it was successful. Tried doing it manually via Fastboot and continue to get the error in flashing.
I just received my replacement phone. So I might just call it a day on this one. :crying:
Click to expand...
Click to collapse
Good to hear about replacement! There are a few people in these forums that have a brick and can't get out of it. I thought you couldn't Hard brick these phones unless that was your goal. And most of these users who have bricks don't even know what causes it. Just a random reboot then loops. Kinda scary.

Bootloop With locked bootloader 7.0

My 6p is stuck in a bootloop. nbd90x build my bootloader is locked is there anyway to unlock from adb. I have already tried sideloading ndb90x through adb wipping chache and user data and still no luck. Help me Xda youre my only hope..

So you previously enabled USB debugging, how about OEM unlocking? If so, use 'fastboot flashing unlock' to unlock the bootloader. Note that internal storage will be completely wiped. Everything. Though with USB debugging enabled, you should be able to adb pull the contents of you SD card first. If you can unlock the bootloader you can try flashing factory images with fastboot. Otherwise, not much else besides RMA it with Google. There's been a few reports of stock N6Ps bootlooping. Haven't seen anyone post that Google denied the claim.

no bootloader is locked so cant flash using flashboot but debugging is enabled so I am able to use adb .

I know. What I'm asking is if you enabled allow OEM unlocking in developer settings? That doesn't unlock your bootloader in itself. You still need to use fastboot to do it. However if that setting IS enabled what you can do is... Use ADB to pull your internal storage to PC. Then use fastboot to unlock the bootloader and flash factory images. If the setting is not enabled, and wiping data and flashing an OTA don't work, I'm not sure what else can be done.
You can try downloading the 7.1 dev preview OTA and seeing if it updates whatever is causing it to fail. Other than those, RMA would be your best bet.
https://developer.android.com/preview/download.html#device-preview

After sideloading a ton of times between 7.0 and 7.1, one time i got it to boot up then i immediately enabled oem unlock then it crashed again... so now I am able to flash through fastboot although I havent been able to get it to boot again. Is it normal for bootloops to not get fixed by flashing?

Hijacking your post to report what is happening to me. I posted the same thing on the Android Beta program community on G+.
Have been using the latest beta since it came out on completely stock 6P (locked bootloader, unrooted). Everything working normally when yesterday around 10 or 11AM, phone starts to bootloop OUT OF NOWHERE, it was just sitting there on the table while I was working. I could still get to bootloader/recovery, so that was a bit of a relief. First thing I tried: clear cache, nothing. Then proceed to wipe/factory reset the device, to no avail. Immediately downloaded the latest factory image from Google's page, tried flashing it but couldn't since the bootloader was locked (OEM unlock option also disabled). Then downloaded the beta OTA and sideloaded it, process went through OK but device still bootloops. Tried sideloading the latest stable OTA but didn't work since it was from a previous build. Ran out of ideas. So there I was creating a thread on XDA for help while the device was still on its bootloop rush, about to hit the Submit button when again OUT OF THE BLUE SKY the device decides to boot itself back up. First thing I did was unlock the bootloader. Phone worked normally for 6 or 7 hours, when I'm doing something on it and then again, screen froze and bootloop starts again. This time I only reset the device and left the it bootlooping, after about 30 minutes it boots up again. I unenrolled from the beta and installed the latest 7.0 build. Everything working fine for the last 12 hours. Anyone have any idea on what can cause the device to bootloop like that? Never seen anything like it.

Yea I signed up for the beta program too do you have the link to unenroll? So you just reset and let it sit?

Here you go
google.com/android/beta

do you remember what you did to get it to boot?

noetre said:
do you remember what you did to get it to boot?
Click to expand...
Click to collapse
Well, that's the thing. Everything I tried didn't seem to work. I couldn't flash the factory image since the bootloader was locked. I was able to sideload the beta OTA but the device still bootlooped after that. So I just left it bootlooping and after around 20 or 30 minutes the device booted normally. I have no idea what caused it and what I did to make it work again.
P.S: device restarted 2 times while I was typing this.

noetre said:
do you remember what you did to get it to boot?
Click to expand...
Click to collapse
If your boot loader is locked you are screwed, sorry to say, I would RMA it. Unbelievable an update can mess a phone up...that's why I always unlock the bootloader first thing and never lock it. I need complete control of my phone.
Edit: Only thing I can think of is delete the partitions with fastboot or adb and reflash factory image.

boot loader is unlocked now Ive tried flashing using the flash-all script but the phone still wont boot

noetre said:
boot loader is unlocked now Ive tried flashing using the flash-all script but the phone still wont boot
Click to expand...
Click to collapse
As a last resort, flash all of the images manually with fastboot. This will wipe all userdata and completely format the SDcard. Nothing will be left. Extract the bootloader and radio images from the factory images zip. Flash them in fastboot. Reboot to fastboot again. Extract the next zip in the same folder as BL & radio images and flash the vendor, system, boot, recovery & userdata image files. Just for good measure, boot to recovery (stock Android recovery) and perform a factory reset & cache wipe. If the phone still fails to boot, your only option would be to RMA it at this point.
Note: As per Heisenberg's sticky thread, do NOT flash userdata.img if you have anything besides the 32gb model as you will only have the ~32gb storage available. If you're using a model with more storage, just use fastboot to format userdata but don't flash the image.

Ill try that.. but isnt the warranty voided because the bootloader is unlocked?

noetre said:
Ill try that.. but isnt the warranty voided because the bootloader is unlocked?
Click to expand...
Click to collapse
Not on a Nexus, no.
Added: I had to RMA mine after the phone got its first update. I unlocked the bootloader and stayed stock for a long time (until N came out). I took the OTA in About Phone and it applied with no problems but the phone would not boot. Factory images also couldn't get it running. Stock recovery and all. RMA'd without issues. I didn't tell them, just sent it in. If they tried to boot it they would've seen the unlock symbol. There's also a thread somewhere buried in the general section where someone called Google and asked and they confirmed to them that unlocking does not void warranty. I'll try to find it for you.
Found it: http://forum.xda-developers.com/nexus-6p/general/unlocking-bootloader-warranty-google-t3229804/page1
I also returned 4 faulty Nexus 5's (mostly screen artifacts) all unlocked with no problems.

sudden bootloop (can't get into recovery mode) n I didnt update to android 7,

so there I was in my car, my phone plugged in via aux cable and playing some music
suddenly I notice the music stops and my phone goes into a reboot,
I was using a pure nexus rom on marshmallow ( the latest marshmallow one i believe) and had xposed, and sometimes my phone would randomly reboot,
it was annoying but I could live with it
so i thought it was having another one of it's moment
but now it doesn't actually reboot,
my phone is stuck in a reboot loop and I can't even get into recovery mode, (I had TWRP installed and could boot into it numerous times before this)
anyone have any ideas?
I've installed twrp via fastboot
but I can't use the adb command to boot into recovery since device is not found,
when i try
adb devices
the list is empty,
and yes I've installed the latest google drivers via android studio
I've installed hi-suite
someome please help

jay0514 said:
so there I was in my car, my phone plugged in via aux cable and playing some music
suddenly I notice the music stops and my phone goes into a reboot,
I was using a pure nexus rom on marshmallow ( the latest marshmallow one i believe) and had xposed, and sometimes my phone would randomly reboot,
it was annoying but I could live with it
so i thought it was having another one of it's moment
but now it doesn't actually reboot,
my phone is stuck in a reboot loop and I can't even get into recovery mode, (I had TWRP installed and could boot into it numerous times before this)
anyone have any ideas?
I've installed twrp via fastboot
but I can't use the adb command to boot into recovery since device is not found,
when i try
adb devices
the list is empty,
and yes I've installed the latest google drivers via android studio
I've installed hi-suite
someome please help
Click to expand...
Click to collapse
Hi... You can't use adb commands while in bootloader... Only fastboot commands. Use the volume rocker till you see recovery mode displayed and press power button. If it still bootloop, try formatting cache and data with fastboot in bootloader and reboot in recovery again. If it still bootloop. Finally try fastboot flash a stock Google image. If none of these steps work, your phone is probably dead and you'll have to try to RMA your N6P.
Check this thread for further infos: https://forum.xda-developers.com/nexus-6p/help/boot-loop-death-nexus-6p-t3533528/page21

5.1 said:
Hi... You can't use adb commands while in bootloader... Only fastboot commands. Use the volume rocker till you see recovery mode displayed and press power button. If it still bootloop, try formatting cache and data with fastboot in bootloader and reboot in recovery again. If it still bootloop. Finally try fastboot flash a stock Google image. If none of these steps work, your phone is probably dead and you'll have to try to RMA your N6P.
Check this thread for further infos: https://forum.xda-developers.com/nexus-6p/help/boot-loop-death-nexus-6p-t3533528/page21
Click to expand...
Click to collapse
ohhh i see
yeh I dones't let me get to the recovery mode in the options from bootloader
and what are the commands to format cache and data in fastboot??

5.1 said:
Hi... You can't use adb commands while in bootloader... Only fastboot commands. Use the volume rocker till you see recovery mode displayed and press power button. If it still bootloop, try formatting cache and data with fastboot in bootloader and reboot in recovery again. If it still bootloop. Finally try fastboot flash a stock Google image. If none of these steps work, your phone is probably dead and you'll have to try to RMA your N6P.
Check this thread for further infos: https://forum.xda-developers.com/nexus-6p/help/boot-loop-death-nexus-6p-t3533528/page21
Click to expand...
Click to collapse
and im trying to flash a stock google image
im following steps from the official android page
but how do I execute a .sh file?
the instruction is to go to the folder with files and execute 'flash-all.sh'

jay0514 said:
and im trying to flash a stock google image
im following steps from the official android page
but how do I execute a .sh file?
the instruction is to go to the folder with files and execute 'flash-all.sh'
Click to expand...
Click to collapse
First try:
fastboot format cache
fastboot format userdata
If the above doesn't solve your issue it's probably dead...
Check this thread for factory image flashing tutorial: https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928/page552
Good luck...

5.1 said:
First try:
fastboot format cache
fastboot format userdata
If the above doesn't solve your issue it's probably dead...
Check this thread for factory image flashing tutorial: https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928/page552
Good luck...
Click to expand...
Click to collapse
followed the guide to install stock rom,
still in reboot loop
how can a fine phone just die suddenly? :S

jay0514 said:
followed the guide to install stock rom,
still in reboot loop
how can a fine phone just die suddenly? :S
Click to expand...
Click to collapse
Sorry... Known issue with the N6P... Have you checked the tread I linked you in my first answer?
Good luck...

jay0514 said:
and im trying to flash a stock google image
im following steps from the official android page
but how do I execute a .sh file?
the instruction is to go to the folder with files and execute 'flash-all.sh'
Click to expand...
Click to collapse
Fastboot flash-all.sh is for Mac computers so presumably you have a Mac. Flash-all.bat is for windows. You need to unzip the Google image and move everything into the same folder where you have the fastboot program. Just open a command prompt window inside that folder and type the command. That's how I do it in Windows. Presumably the process is similar with a Mac. You will still have a zipped archive after you unzip the Google image but you want to leave that one as is. So far flashing flash-all.bat has gotten me out of every boot loop I've gotten into on my 6P but my phone never spontaneously bootlooped. I was always doing something (updating a rom, trying to restore a nandroid backup) that resulted in a bootloop. The fact that your phone boot looped without warning is probably a bad sign. If you still have warranty I would try to flash stock and see if you can RMA phone. If that isn't possible you might want to try staying on stock or using a different rom and seeing if the random reboots still occur. Good luck.

Well that really sucks. Sorry for your loss but it is a long running phone failure problem. I'm on my second 6P because this. Even worse to me is the fact your were running almost the exact same setup I am now. I refrained from running 7.x.x to try and minimize my chances of another BLOD so now w4on knows what to do. Lol
Sent from my Nexus 6P using XDA-Developers Legacy app