yashsingh1/xdaforums huggingface dataset:
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
Well, there seems to be way to many issues here. So what I did was just fastbooted back to stock ( I used the June images since i was lazy to download the vurrent files) from Pure Nexus June patch. went to the N beta tester site and registered the phone, and BOOM couple hours later it popped up on my phone as an OTA and it downloaded and installed fine. I then did a factory data reset and ADB into the bootloader, flashed TWRP 3.0.2-1 and flashed SuperSU 2.76 (i'm fine with regular root right now) and all is perfect. Hope this helps.
[Nexus 6P Q&A, Help & Troubleshooting] emanoj.i9103:
Can the people affected please post your EMMC chip manufacturer details?

Just trying to figure out a pattern if it happens to exist.
[Nexus 6P Q&A, Help & Troubleshooting] paulnuk:
64GB Samsung
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Stuck with the exact same issue :\

---------- Post added at 10:10 AM ---------- Previous post was at 09:49 AM ----------

32GB Samsung
[Nexus 6P Q&A, Help & Troubleshooting] neree:
Hey,

This very same issue seems to be happening with 5X as well. My bullhead is doing exactly the same. Went from 6.0.1 stock rooted to 7.0, then decided to go back by flashing 6.0.1 factory images, now stuck on bootloop.
[Nexus 6P Q&A, Help & Troubleshooting] Tomv5314:
Nexus 6P. Another one in the boot loop even after flashing factory image twice. Also a new twist I did not flash Nougat just went to new TWRP3.0.2.1 than factory reset and restored a backup done on the older TWRP.3.0.2-0. Into the boot loop of Google screen to warning back and forth. Maybe something with new TWRP?
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Would anyone be kind enough to share their TWRP backup file of Android 7.0...maybe restoring that might work? :confused:
[Nexus 6P Q&A, Help & Troubleshooting] :
Nevermind...
[Nexus 6P Q&A, Help & Troubleshooting] kcteun:
I was on Pure Nexus 6.0.1, flashed OTA update. It was working fine, but I needed some data off the backup that I couldn't seem to get with TiBu or Nandroid manager. Factory wipe, restored PN, boot loop. Have tried everything previously posted, and a few others. No good. Project Fi is replacing the phone under warranty. I kept seeing partition errors while trying to repair the damage. I also was having trouble with TWRP not mounting sdcard storage. Trying to restore the 7.0 nandroid that was working did not help. Maybe when the factory image of 7.0 is released?
[Nexus 6P Q&A, Help & Troubleshooting] anthropolyte:
Just a thought on this, is it possible that 7.0 resized the system partition? Just debating whether that could be causing issues when trying to downgrade, as the 6.0 ROM won't resize them back.
[Nexus 6P Q&A, Help & Troubleshooting] paulnuk:
I've just been sent a replacement from Google. Easiest way out of this mess. If you've bought the phone through the play store you can get a call back from Google here and arrange a replacement. Make sure you have your IMEI handy which is both on the back of the phone and in the SIM tray.

https://support.google.com/store/co...calationflow.c2c&cft=5&ctx=return_call_return
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Don't have that option :(
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
There should be a sticky warning about dirty flashing the OTA or any Nougat file over a custom Rom. Instructions should be to restore stock via images and then do the update. Very similar to how there was a sticky warning people not to make Rom backups while the Rom still had fingerprint security enabled. Also, that reverting back to MM could also lead to a brick that not even Fastbooting factory images will fix.

We've already had a few casualties potentially, lets not make it genocide here.
[Nexus 6P Q&A, Help & Troubleshooting] Funkwheat:
To those asking, I (and others) tried factory restore following Google's precise instructions. No change. Now I'm getting the run around from Google as I called them yesterday and they couldn't figure out the problem, then promised me a followup from their second tier. Called today after hearing nothing and they said it was escalated to the next tier past that and that I should hear something "soon". At this rate I'm going to be going into the weekend with no cell phone.

Judging by the other replies on this thread, it's clear that there is some type of change somehow that leads to a soft (or effectively hard, in this case) brick after going to N and then attempting to go back to M.
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Even from rooted stock MM, in my case
[Nexus 6P Q&A, Help & Troubleshooting] MeeAndroid:
Maybe this will help some of you: I had the same problem - Flashed 7.0 with twrp-3.0.2-1 - wanted to go back to Marshmallow and nothing worked to get this thing alive again. Not even Backups

Now i flashed the older version of twrp (twrp-3.0.2-0) with fastboot, flashed my Backup of DU again and it booted just fine.
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
If that works for everyone you might have saved a lot of lives (phones)
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Flashed a few older versions of twrp....none of the recoveries boot up except for 3.0.2-1....the rest get stuck in the twrp loading page
[Nexus 6P Q&A, Help & Troubleshooting] paulnuk:
or completely stock MM in my case
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
Ive been at this for hours. Following your instructions to the letter. Im flashing MTC20F factory images now - in the cmd window I got all the way to C:\Android>fastboot flash boot C:\Android\boot.img - It just stays there - screen has done nothing for over 10 minutes now
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
OMG, tried a couple of times to flash MTC20F factory images. Never worked. Booted back in to twrp 3.0.2..0 and flashed Update_Android7.0_Nexus6P, TWRP 3.0.2-1, modboot.img and the reboot. So I getting no bootloops - phones is showing the MM bootanimation. Been doing this for 4 minutes so far........fingers crossed :)

---------- Post added at 03:45 PM ---------- Previous post was at 03:34 PM ----------

Well, its been 15 minutes and the bootanimation is still going......face palms :(
[Nexus 6P Q&A, Help & Troubleshooting] :
Maybe when nougat factory image will be available, then flashing it will fix everything.

If not, then only solution most probably is taking phone to warranty service or RMA. :(
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
OK so this is what some dude did to get back from Nougat to Pure Nexus. It was in the Pure Nexus thread post #21818. Hopefully this will help anyone here that has a brick. Not sure how he went to Nougat, that could always play a factor in success.

Advanced wipe - System, Data, Cache and Dalvik.

Flash vendor image MTC20F.

Flash PureNexus, Gapps, SuperSu 2.76.

Reboot.
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
I tried this a while ago - didnt work. Thanks for the heads up
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
Ahhh sorry :(
[Nexus 6P Q&A, Help & Troubleshooting] tyea:
I used 7.0 on my Nexus 6p for a day (sideloaded the full version from android police) and today I started getting a bootloop. Flashing the latest factory image does not fix the bootloop. I tried several custom roms and got the bootloop. Finally, I think I'm having success with cyanogenmod nightly 8-24 + open-gapps stock 8-24. I should note this failed earlier today, but trying it again I think the install may complete. I never had a problem with factory images, but I can't escape the boot loop if I use the flash-all.bat file for MTC20F.
[Nexus 6P Q&A, Help & Troubleshooting] frost_nz:
OK, presuming this is something partition related - could someone who is having the bootloop issue give this a go?

Get into TWRP (3.0.2-1)

Wipe ALL partitions

Reboot back into TWRP, go to Wipe > Advanced Wipe > Select System > Repair or Change File System > Resize File System

Once this is done, try flashing the MM factory image again from fastboot.

If the above doesn't work, try following the same instructions, but use TWRP 3.0.2-0 and see if that works.

Let me know if that makes any difference
[Nexus 6P Q&A, Help & Troubleshooting] rbouza1:
flashing as we type

---------- Post added at 09:19 PM ---------- Previous post was at 09:13 PM ----------

i flashed the may image after your instructions and still looping
[Nexus 6P Q&A, Help & Troubleshooting] frost_nz:
OK thanks, thought it was worth a shot. Did you downgrade the bootloader when you flashed the MM images?
[Nexus 6P Q&A, Help & Troubleshooting] rbouza1:
yeah to the same that came with the image. im trying other twrp
[Nexus 6P Q&A, Help & Troubleshooting] tyea:
Didn't work. I back to installing cyanogenmod again. I had to try to flash it 3 times, and now it seems to be installing again. Oh-well I guess I'm using cyanogen for a while, until this problem gets discussed some more.
[Nexus 6P Q&A, Help & Troubleshooting] shiftr182:
My phone was stuck on the google/warning screen for six hours after trying to restore Resurrection Remix from Nougat. I flashed back to stock MM using Wuggs toolkit, stock M, tried flashing roms, tried backups, etc.

I finally got mine to boot by wiping everything, repairing all of the file systems, flashing the N bootloader and flashing the OTA in this thread through TWRP. https://www.reddit.com/r/Nexus6P/comments/4z4ru1/android_n_ota_link_for_nexus_6p_from_601_to_70/
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
Did it boot right away or did it loop for a while then boot? Followed it closely, wiped, resized, repaired etc. Flashed the N bootloader and ota.zip through TWRP
[Nexus 6P Q&A, Help & Troubleshooting] Jammol:
When you guys say you're flashing back to MM, what exactly are you flashing?

The factory package has a "flash-all.bat" script that I like to use. It wipes everything per partition itself instead of just wiping the contents of the partitions. I am currently bone stock, locked and loaded waiting for the factory image so that I can test.
[Nexus 6P Q&A, Help & Troubleshooting] blitzkriegger:
For anyone having boot loop issues when flashing back to mm, have you tried decrypting by formatting data before flashing back the stock images?

At least for me when I flash clean I wipe first all partitions via TWRP after which I format data. Then I reboot back to TWRP, then afterwards reboot back to bootloader and flash the stock images.
[Nexus 6P Q&A, Help & Troubleshooting] shiftr182:
It booted to the boot animation, rebooted, took a long time, then completed. It was in boot animation for like 7 minutes.
[Nexus 6P Q&A, Help & Troubleshooting] itspritts:
I think I may have narrowed it down to the vendor partition (maybe). I don't know if it is corrupted or the wrong size. I read about a method in a forum for the boot loop with N preview builds using an ADB OTA recovery. I fastboot flashed the MTC20F image (no issues) and then did the ADB factory recovery sideload and failed on flashing vendor image. I will fart around with it some more and see what I come up with. But if anyone knows anything about the vendor partition please help.
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
Im flashing the factory MTC20F image. Ive got all the files in my fastboot folder. When I do the "flash-all.bat" script,everything goes well through writing radio, rebooting to bootloader. Then it errors out: error update package missing boot.img Press any key to exit
[Nexus 6P Q&A, Help & Troubleshooting] Eric214:
I'm wondering something. Remember the seamless updates Nougat was bringing to the table? That was supposed to create a secondary update partition to hold the update while it installs. I know that's only for the new phones that will come with Nougat. I'm wondering if this is why maybe the vendor image is not getting cleared properly? Maybe they still made the positions. No idea but I think there's maybe something to that thought.
[Nexus 6P Q&A, Help & Troubleshooting] itspritts:
..I thought the same exact thing
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
OMG I finally got mine to work :D

I'll note down the exact steps , most of which may or may not be relevant

1) Flashed MTC20F using TWRP 3.0.2-1

2) Booted into recovery and wiped everything and the partitions

- Add - Booted back into twrp 3.0.2-1 and then swiped to allow modifications

3) Then fastboot flashed TWRP 3.0.2-0

4) Restored my backup ( except recovery)

5) Still got stuck in the google screen.

Now the next parts are a bit weird

6) Booted into TWRP, flashed vendor.img from pure nexus rom

7) wiped everything except internal storage

8) Flashed vendor.img, pure nexus rom and gapps and then flashed vendor.img again

9) Rebooted and it worked :D

Let me know if it worked for you guys or if you need any more help
[Nexus 6P Q&A, Help & Troubleshooting] Ericarthurc:
Hey just got my replacement phone today :D but I still haven't shipped back the old broken so I gave this a shot and i didn't work for me! I noticed you mentioned that your phone was stuck on the google screen. I believe it its stuck it has something to do with the system partition. But my phone (and some others) were going back in forth between the google screen and the unlocked boot loader screen; this seems to be a different problem.
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Basically mine did the same...Google and warning screena and back and forth. After step 4, it stayed in the google screen ans didn't go back
[Nexus 6P Q&A, Help & Troubleshooting] Ericarthurc:
So I understand that a lot of the developers and senior members on XDA are busy with the Android 7 release and dealing with there own stuff. But I was wondering if any one is looking into this problem and a possible fix. With all the people posting about suffering from this boot loop it worries me. My biggest fear is when custom roms like CyanogenMod, Pure Nexus, Chroma, Resurrection, etc.. upgrade there roms to 7 that all theses issues start happening again. I feel like this needs to be resolved before anyone flashes Android 7 on there device. I know personally I am scared to flash anything 7 at this moment. Just got my replacement phone and flashed Pure Nexus on it and obviously happy; but would love to enjoy the features of Android 7 when PureNexus upgrades his rom, without the fear that my phone will be in a permanent boot loop for the rest of its sad machine life. Just wondering if any work is being done on whats causing this; there just too many people posting "Going to google for a replacement." I also understand that the 7.0.0 factory image isnt technically out yet for the Nexus 6p but I really doubt that will resolve anything. The Android 7 OTA is poison as of now; and I will be staying clear. Sorry to all suffering from this!

It really is super awesome that this awesome community is really working to help each other out by posting all steps they have tried! Love this community ; but it looks like this issue is going to have to pass to someone that understands how the system works better then the common rooter and flasher haha.
[Nexus 6P Q&A, Help & Troubleshooting] kkdamion:
this is what i tried so far on my nexus 5x

-wiped and restored 3 diffrent backups

-full wipe and flashed diffrent roms

-flashed factory image 6.0 and 6.0.1

-flashed 7.0 ota zip in twrp (extracted and flashed system.img and vendor.img )

-flashed factory image and used stock recovery to flash 7.0 ota.zip trough ADB sideload

First i was stuck in a bootloop freezing at the 4 coloured dots

After flashing a factory image and flashing 7.0 ota zip trough ADB sideload

I'm now stick at the Google screen with no bootloop
[Nexus 6P Q&A, Help & Troubleshooting] helioXverse:
As far as I can tell, I may have missed a detail or two, but it seems that the phones having issues have updated via either direct or side loaded OTA. Using the OTA modifies the partitions much differently than flashing a custom rom. Flashing most roms only writes files to the /system and /data partitions, but doesn't actually change the partitions characteristics.

I flashed the "Stock+" N-based rom from the Android Development section and have been able to flash back to MM roms and then flash back to the "Stock+" rom with very little issue, (I forgot to flash a MM vendor the first time and it wouldn't boot, worked fine after the vendor though).

Once the custom Roms come out, I don't think this issue will become widespread. There may, how ever be an issue downgrading from a factory N phone to a MM rom, but only time will tell for that.
[Nexus 6P Q&A, Help & Troubleshooting] Ericarthurc:
Oh okay! Awesome! Thanks for explaining that! Makes me feel better! :D
[Nexus 6P Q&A, Help & Troubleshooting] scoot0073:
It seems from what I been reading the Boot loop with no fix ATM is when you go to 7 and then try to go back to 6.0.1..

So if you go to 7 then don't try to go back .

I was on PN and for me to get on 7 I fastboot the factory image back to stock recovery and everything. Then I went to sign up for the developer program and less than 2 minute got the OTA update to 7.

Downloaded it then went into stock recovery and did a factory reset then rebooted into Android 7 set everything up accounts and apps n such.

Then booted into bootloader and fastboot TWRP 3.0.2.1 the newest version.

Then booted into TWRP recovery and made a backup. Then flashed Updated SuperSU 2.7.6

And booted into Android 7 verified root access restored all my Titanium backup app data then booted into recovery and made one more backup and that's it..
[Nexus 6P Q&A, Help & Troubleshooting] Jammol:
Okay you should have a zip package along with flash all and radio etc. Unzip the package and there should be a folder of each system partition, is boot.img in there?
[Nexus 6P Q&A, Help & Troubleshooting] rbouza1:
thing is we cant get back to 7 even
[Nexus 6P Q&A, Help & Troubleshooting] kyzn:
I managed to go from Pure Nexus to Nougat and back again. I dunno how that happened. And I'm not the only one. There's three of us over at the PN thread who successfully downgraded. And another 2 who couldn't do it.

My method was -

Pure Nexus 08/21 build > Fastboot stock MM > ADB sideload N OTA > Clean flashed the debloated N ROM > Clean flashed Pure Nexus 08/21.

No errors, no bootloops. Used TWRP 3.0.2-1, remained Encrypted through the whole process. I did format userdata but that was because my internal storage needed cleaning.

Not saying this is an assurance that you might get lucky. But it's possible to roll back. I did notice that most people would use fastboot to get back to MM.
[Nexus 6P Q&A, Help & Troubleshooting] fkntwizted:
I don't know if this will help as I have the same issue. I unlocked bootloader, OTA beta, having bootloop. I have been able to quickly get into setting and do a factory reset and it seems to allow the phone to stop bootlooping for a time say 4 or 5 hours. I don't know if that helps anyone.
[Nexus 6P Q&A, Help & Troubleshooting] godzulu:
Yes, in the zip folder there is android-info.txt and the following images - boot, cache, recovery, system, userdata and vendor.
[Nexus 6P Q&A, Help & Troubleshooting] tyea:
I have other posts in this thread, but I want to clarify I did not attempt to go back to MM from 7.0 sideloaded version until my Nexus 6p just started to bootloop (cycle between google logo splash screen and bootloader unlocked screen) while on 7.0. I had cyanogenmod working briefly last night, but now it has started to bootloop. I've swapped my project fi sim card to my cracked screen Nexus 6 until there is a solution.

I thought I was cutting back on time consuming rom flashing by sticking with stock updates, but this self afflicted sideload problem, that is not fixable by flashing a factory image, has me thinking about replacement phones other than a Nexus, which is a little sad.
[Nexus 6P Q&A, Help & Troubleshooting] fkntwizted:
Why isn't anybody trying to flash the preview instead of mm since they are essentially the same build? Maybe that might help with the bootlooping.
[Nexus 6P Q&A, Help & Troubleshooting] kkdamion:
I tried flashing N preview rom trough twrp didn't worked, but I didn't tried N preview factory image. Maybe somebody can try that
[Nexus 6P Q&A, Help & Troubleshooting] rbouza1:
i tried thru toolkit, same old bootloop from google to warning screen. one point i had one load but i had wrong vendor cant remember what process i used
[Nexus 6P Q&A, Help & Troubleshooting] fkntwizted:
I'm still not bootlooping after 2 hours. Maybe it is a app that is messing with it? Only thing I remember doing shortly before the bootlooping was turn on the tuner and after the reformat the 1st time did the same thing had the same issue. (I'm on my 2nd reset).
[Nexus 6P Q&A, Help & Troubleshooting] jesssiii:
I went from PureNexus MOD by restoring backup if DP5 in the newest twrp, then flashing the OTA flashable zip from reddit. After a few hours I was having random reboots so I went into twrp and restored my PureNexus MOD backup. No issues, I feel fortunate after reading here.

Nexus 6P
[Nexus 6P Q&A, Help & Troubleshooting] loakyj:
I've got a Nexus 5X but your symptoms seem identical to mine. I managed to dig mine out of the constant bootloop and posted how I did it on a 5X thread, hope it helps some of you guys in some way, long shot maybe..

http://xdaforums.com/showpost.php?p=68365454&postcount=10
[Nexus 6P Q&A, Help & Troubleshooting] fkntwizted:
Now 4 hours without a reboot. (No downloads other than stock apps on n6p, unlocked, not rooted) hope this helps.
[Nexus 6P Q&A, Help & Troubleshooting] itspritts:
What did you do?
[Nexus 6P Q&A, Help & Troubleshooting] kkdamion:
i think he flashed twrp version 3.0.0-1 like loakay said in the post before
[Nexus 6P Q&A, Help & Troubleshooting] tr4nqui1i7y:
Has this method helped anyone stuck in permanent loop? I've tried everything else in the thread, plus a few other variations, and all to no avail.
[Nexus 6P Q&A, Help & Troubleshooting] kkdamion:
omg it worked it booted im now restoring my backup
[Nexus 6P Q&A, Help & Troubleshooting] BakedTator:
any chance you could share a backup that dont include your data or efs? i dont have one and need to give this a shot before i send my phone off for repair...please
[Nexus 6P Q&A, Help & Troubleshooting] Gumby63:
I know this hasn't worked for everyone, but here's how I fixed my bootloops. I had tried to restore a MM backup while running 7.0 and got the issue in this thread. To fix, all I did was flash the MTC20F vendor, reverted back to twrp 3.0.2.0, then restored the MM backup I had. Just booted and running with no issues! Hope this helps someone :good:
[Nexus 6P Q&A, Help & Troubleshooting] fkntwizted:
I didn't download all my apps. I'm slowly downloading every couple of hours. So far I'm 8 hrs into it without a reboot.
[Nexus 6P Q&A, Help & Troubleshooting] kkdamion:
i have a nexus 5x but both phones have the same problem

i think the problem is in the vendor image and a older version of twrp is needed
[Nexus 6P Q&A, Help & Troubleshooting] neaznc021:
Yeah me too
[Nexus 6P Q&A, Help & Troubleshooting] BakedTator:
I tried everything without having a marshmallow backup...thinking that is a really important step to fixing this
[Nexus 6P Q&A, Help & Troubleshooting] bzz11g:
[MENTION=4196424]kkdamion[/MENTION] [MENTION=5513075]neaznc021[/MENTION]

+1

can any body make full backup of MM stock rom Nexus 5x and upload for us?
[Nexus 6P Q&A, Help & Troubleshooting] rbouza1:
or 6p backup for me
[Nexus 6P Q&A, Help & Troubleshooting] tyea:
A thread I read by Heisenberg stated to format via fastboot the userdata partition before installing a factory image via flash-all.bat, and this worked for me.
[Nexus 6P Q&A, Help & Troubleshooting] bzz11g:
I think trouble in cache partition, see log http://imgur.com/a/cY9WT
[Nexus 6P Q&A, Help & Troubleshooting] Jammol:
Can you try flashing the factory image of the latest MM? Just so you know, this may not work and you may end up with a brick. If you're brave enough to try it.
[Nexus 6P Q&A, Help & Troubleshooting] pa.pn2:
same here.what a ****.anyone made an exchange allready?what will google say?