Nexus 6P Bootloop after 4core - Nexus 6P Q&A, Help & Troubleshooting

I applied the 4core fix for my N6P back in September of last year, and stopped using it around December because of the battery life. Around July/August I purchased a battery and installed it and things were going well. Now my phone is freezing and booting to the Google Logo and... Crash again. No Nexus animation; Google, crash. Sometimes it will attempt to boot and bootloop and sometimes it turns on and works fine. Sometimes if it turns back on it freezes and boom. Google logo.
I guess the remaining 4 cores in this phone are done completely from the looks of it? I know the patch wasn't meant to be permanen, only temporary because the remaining 4cores would eventually die.

snappycg1996 said:
I applied the 4core fix for my N6P back in September of last year, and stopped using it around December because of the battery life. Around July/August I purchased a battery and installed it and things were going well. Now my phone is freezing and booting to the Google Logo and... Crash again. No Nexus animation; Google, crash. Sometimes it will attempt to boot and bootloop and sometimes it turns on and works fine. Sometimes if it turns back on it freezes and boom. Google logo.
I guess the remaining 4 cores in this phone are done completely from the looks of it? I know the patch wasn't meant to be permanen, only temporary because the remaining 4cores would eventually die.
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Click to collapse
My 6p also started bootlooping again today and this time fix didn't help me. I think it's gone for good.

maxguncel said:
My 6p also started bootlooping again today and this time fix didn't help me. I think it's gone for good.
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Click to collapse
Is yours booting to the Google logo and crashing? Or simply bootlooping? Mine goes to the logo, crashes about 10-15 times and then eventually attempts to boot.
It's a shame, got a baby on the way and simply can't afford another phone right now

snappycg1996 said:
Is yours booting to the Google logo and crashing? Or simply bootlooping? Mine goes to the logo, crashes about 10-15 times and then eventually attempts to boot.
It's a shame, got a baby on the way and simply can't afford another phone right now
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Click to collapse
Displays Google logo about 20-30 sec and restarts. Before I could see the animation but this time no luck.
Congratulations! I also have a newborn, we'll see what the future holds

maxguncel said:
Displays Google logo about 20-30 sec and restarts. Before I could see the animation but this time no luck.
Congratulations! I also have a newborn, we'll see what the future holds
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Click to collapse
Thank you You too! Day of Thanksgiving he is supposed to get here, but my wife isn't doing too well lol do you know of any way for us to pull data? Adb is failing to see my device when it's in the bootloader, fastboot is working though. I tried once more to flash twrp 4 core and boot it with no luck. Those small cores gave out I guess. I left my phone on overnight bootlooping with no luck. I got most things off, just my actual camera fder I couldn't get and apps which aren't a huge deal.

Sadly this morning I had the same problem. Bootlooping, I even cannot enter into Recovery. Then, suddently, it restarted, but I wasn't home, so I hadn't the chance to save the data. Then, about 3 hours later, it restarted bootlooping and, since then, it's stucked into this bootloop. Even reflashing the modified boot won't work.
Anybody knows how to at least recover the data inside? Even if I have to break the phone (I'm going to buy onther one soon)

hey guys, me too. but you know something? my initial assessment was that it was a result of an update. Now looking here annd seeing so many others with the same problem at the SAME TIME?? mine happened out of the blue on about October 4th or 5th. Ive had this phone for two years and never had aproblem with it at all. right out of the blue (in the morning) i get the bootloop. I cleared the cache and it booted up again. it was just fine for two days and now it is down black and out. When i push the power button i get a red light. one blink. if i hold down pwr and vol i get 8 blinks. tried on stock charger and other charger. like was previously mentioned when i tried it on a different charger it worked. the first time. now its dead. any solutions?

Marxmellow said:
hey guys, me too. but you know something? my initial assessment was that it was a result of an update. Now looking here annd seeing so many others with the same problem at the SAME TIME?? mine happened out of the blue on about October 4th or 5th. Ive had this phone for two years and never had aproblem with it at all. right out of the blue (in the morning) i get the bootloop. I cleared the cache and it booted up again. it was just fine for two days and now it is down black and out. When i push the power button i get a red light. one blink. if i hold down pwr and vol i get 8 blinks. tried on stock charger and other charger. like was previously mentioned when i tried it on a different charger it worked. the first time. now its dead. any solutions?
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Click to collapse
It simply means that the battery is fully discharged. Keep it connected to the current and maybe it restarts working.
I'm in the same situation since yesterday, hoping that at some point it returns working for some time, just to backup some data. I have like 10GB of photos not backupped in it.

When I replaced my battery I reinstalled factory. Start from scratch.
I had the same issue and that's all I did. Booted fine after that. I used the ifixit battery tho, cause if you got a lower cost one it could be the battery itself too

Related

Problems booting

Since this morning, when I boot it will get stuck on that red eye screen. I've waited several minutes and it won't go on.
So I end up pulling the battery and usually that works. Sometimes I have to do this twice.
Not sure how to even diagnose this.
HoochieCoo said:
Since this morning, when I boot it will get stuck on that red eye screen. I've waited several minutes and it won't go on.
So I end up pulling the battery and usually that works. Sometimes I have to do this twice.
Not sure how to even diagnose this.
Click to expand...
Click to collapse
Are you rooted or completely stock?
Sent from my ADR6300 using XDA App
Rooted. I just tried restoring a backup from 3 days ago and had the same problem. So I restored back to the latest. When it finally does boot, it seems to run great.
I have a backup from further back, just not sure it will make a difference. Might give that so shot too.
I really think it is booting all the way, and just doesn't stop displaying the boot animation.
The reason I think that is because at some point the power button makes the screen go on and off, and there is haptic feedback in the same places where my lock screen tabs are.
At any rate, and this sounds unbelievable, but I pulled the sd card out and it booted normally. I put the card back in, and now it seems to boot normally. Can't explain it.

S4 i9505 stuck on Samsung Logo

This has started to happen (from what I've noticed.) I replaced an LCD on an S4. Worked fine no problems, tested and turned it off and prepared it for sale. I turn all my phones on for the photo and noticed it would hang on the Samsung logo and wouldn't boot into recovery only download.
I thought it needed restoring via Odin and would freeze at "Get PIT for Mapping..." I thought great, the eMMC randomly died on me. Then, I tried to turn it on the next day and it worked, updated & left it turned on until the battery was low and turned it off.
Now, it's doing the same again.
I highly doubt anybody on here will know as it looks like people focus on iPhones but does anybody have a clue why this might be happening?
Thanks
Urban Designs said:
This has started to happen (from what I've noticed.) I replaced an LCD on an S4. Worked fine no problems, tested and turned it off and prepared it for sale. I turn all my phones on for the photo and noticed it would hang on the Samsung logo and wouldn't boot into recovery only download.
I thought it needed restoring via Odin and would freeze at "Get PIT for Mapping..." I thought great, the eMMC randomly died on me. Then, I tried to turn it on the next day and it worked, updated & left it turned on until the battery was low and turned it off.
Now, it's doing the same again.
I highly doubt anybody on here will know as it looks like people focus on iPhones but does anybody have a clue why this might be happening?
Thanks
Click to expand...
Click to collapse
Maybe you can wait in 15 minute. it happens today make a upgrade firmware to Lollipop, The logo Samsung stuck in 15 minute. and later work well.
Abcastillo said:
Maybe you can wait in 15 minute. it happens today make a upgrade firmware to Lollipop, The logo Samsung stuck in 15 minute. and later work well.
Click to expand...
Click to collapse
It's already on Lollipop, fully updated
Reboot to recovery and wipe cache,it should work?
If not,then unmount cache[emoji57]
Sent from my GT-I9505 using Tapatalk

Note 4 Randomly Turned Off Won't Turn On Anymore

Hi everyone, after trying everything I could to fix this phone I don't know what to do anymore so I'm here asking for other options.
So the story is, I was just using my phone as I usually would that day and it just randomly turned off and won't turn back on anymore.
(it randomly turned off before a couple of times but it would always turn back on)
- It won't go into recovery mode or any other of the 'modes' (I tried all the different combinations of pressing the keys).
- It's not a battery issue as I've tried my battery on my brother's phone (he has a Note 4 too) and it worked fine and I tried his battery on mine and it wouldn't work.
- I tried the 'drain' method (removing the battery and holding the power button for a minute or more).
- I tried using multiple cables to charge my phone nothing worked.
I didn't drop my phone, wet it, root it or anything and it was working fine the day it happened until it just powered off by itself. When I plug it in my laptop it would make
a sound indicating I've plugged something in but nothing happens. It was version 5.1.1 model SM-N910F.
TLDR; Is there a way to somehow recover the files in the internal phone memory?
This is happening to me as well, also started in February. I'm suspecting a hardware issue. Tried it ALL but rooting. In the past 30 minutes my phone has booted and rebooted itself till it died. If someone can confirm it is a hardware issue. Maybe it's time to unite and get it fixed for free. ~Tamarnouche
Recovering data from a brain dead phone may not be possible, as it probably need some internal component replacement which may erase the data(Mostly). Have u tried connecting it to pc? Better give it to service immediately. Good Luck.
My phone has done exactly the same thing, happened in February too, initially it did the random freeze then started to reboot itself, went back to stock software and full wipe but no improvement; now it will only boot if I leave the battery out for a prolonged period, otherwise it doesn't respond to the power button at all.
I occasionally see MMC Read Fail on boot but not all the time so presumably the internal memory has a bad contact or is failing.
Can it be replaced?
HXOY said:
My phone has done exactly the same thing, happened in February too, initially it did the random freeze then started to reboot itself, went back to stock software and full wipe but no improvement; now it will only boot if I leave the battery out for a prolonged period, otherwise it doesn't respond to the power button at all.
I occasionally see MMC Read Fail on boot but not all the time so presumably the internal memory has a bad contact or is failing.
Can it be replaced?
Click to expand...
Click to collapse
I have the same problem with my Note 3. Only if I keep the battery out for a long (over 24 hours) time I can see the boot logo. So if you find a solution to this kindly don't forget to tag me, will really appreciate it.
I was wondering..
I came across this Forum group since I was looking for boot problems with my SM-N910T3
I hope flashing pit will resolve this..
I recently started to have some low level issue and was hoping it was partition/boot related and not hardware.
Randomly phone boot directly into Download mode with error;
ddi: mmc_read failed
Often I have to pull battery and hold down /power / home for 10 sec to boot up again.
Thanks

Help! Bootlooping out of the blue for NO reason

So... For no explainable reason my phone has gone into a bootloop, simply from me attempting to restart the phone.
Details of anything I can think of that might be related are below. I need a genius to help me A) figure out WHY this happend, B) help me figure out if there is a way to (non-destructively) get out of this bootloop (i.e. NOT having to do a factory reset), and / or C) tell me if there is a way that I can perform a full system backup using ADB, Fastboot or Odin with a phone that can't get past recovery or bootloader without going into an endless bootloop. I'm not a lazy guy and normally take the time to research problems and figure them out on my own, however at present this is my only activated phone, it's almost 11pm, I have to be up and out the door at 6am tomorrow, I will be judging competitions all day and will not have any opportunity to do anything about this until late tomorrow... In the meantime, I need a functioning PH1!!
My PH1 is the Sprint variant and I have not rooted it nor have I unlocked the bootloader. The only thing I have "done" to the phone is to sideload the latest OTA, NMJ32F (the day it came out, over a week ago, and it's functioned perfectly since that update). My phone has been in use throughout the day today with no difficulties. I went into a building with very spotty service for several hours this evening. On the way home, I noticed that I was stuck in 3G service, despite being in an area I know has good 4G/LTE coverage. I also noticed an unidentified icon on the status bar, a rectangle, which was located (I believe) to the right of the battery icon. It looked like a rectangle, perhaps representing a screen, or a phone? IDK. The other item of note is that I did sign into the guest account on my phone so that my daughter could use the stopwatch for timing competetion events without tampering with anything. She didn't drop it or get it wet or anything along those lines... she used it to time events, returned it to me in perfect shape. I logged out of the guest account, back into my account, rebooted to try to get the phone back into 4G service, and boom, I'm stuck in a frigging bootloop for no apparent reason.... And I'm about to lose my mind over this.
I CAN get into download mode and into recovery mode by holding the appropriate button combinations when it loops, but from there whether I power off and power on again or whether I select reboot from recovery menu, it continues to loop...
Well folks, still strange, still unexplained, but I had to bite the bullet and factory reset, just can't afford to wait. I'm still open to any thoughts on what might have gone wrong though I suspect we'll never know. This phone has been a bit buggy from day 1, things like BT randomly shutting off, VoLTE wouldn't stay enabled, etc... Hopefully this is the last time this happens. Still love the phone though!
So I am running O beta rooted and last night this happened to me. I ended up going into fastboot and starting OS through there and I had no issue with the reboot bootloop. However, last night I went to bed with a phone @ 75-80% and woke up 6 hours later with a dead phone. Charged and rebooted this morn and everything seemed normal today. It was super wierd
Had to return mine for this very reason. Less than a week in service and went into boot loop. The reboot happened after it lost all battery power (corrupt filesystem?). Several factory resets did nothing to fix it. Removed the SIM. The phone was also fully charged. Did not try ADB as it was brand new and a return was the safest easiest option.
ccopelan said:
Well folks, still strange, still unexplained, but I had to bite the bullet and factory reset, just can't afford to wait. I'm still open to any thoughts on what might have gone wrong though I suspect we'll never know. This phone has been a bit buggy from day 1, things like BT randomly shutting off, VoLTE wouldn't stay enabled, etc... Hopefully this is the last time this happens. Still love the phone though!
Click to expand...
Click to collapse
Any issues since factory resetting? I'm having the same issue. Not sure if i should just return the phone or not.
chray1 said:
Any issues since factory resetting? I'm having the same issue. Not sure if i should just return the phone or not.
Click to expand...
Click to collapse
I am stuck with the same problem, and this is my second phone already. This one doesn't stay on long enough even for an attempt to factory reset. I will send it back again, but I have no hope. Time to cut my losses and move on. Going to Pixel. And I sooo wanted Essential to succeed!
fhlutiis said:
I am stuck with the same problem, and this is my second phone already. This one doesn't stay on long enough even for an attempt to factory reset. I will send it back again, but I have no hope. Time to cut my losses and move on. Going to Pixel. And I sooo wanted Essential to succeed!
Click to expand...
Click to collapse
interesting.
If it's your second phone, have you looked at what applications you install?
The probability of getting two bad phones is pretty slim unless there is a major manufacturing flaw.
Not saying it can't happen, but it would be unusual.
Could it be due to Encrypted Data partition?
It once happened to me on a Huawei Mate 2 which I encrypted data and battery dead, then bootloop.
If that's due to corrupt encrypted partition, there seems only other recovery mode can help you get some files back.

Stock 7.1.2 stuck in boot loop, fix doesn't work, can only get to fastboot

This is a Nexus 6P (32GB) I rooted shortly after getting it (new) in September 2016, and updated to stock 7.1.2 in August 2017, but I otherwise haven't modified it from its out-of-the-box state.
Until recently, I'd never experienced any issues - no random reboots, battery was still pretty good, etc. Then last week, the phone rebooted suddenly, and appeared to "boot loop". I hadn't yet heard about the issues the 6P has with this so I powered it down, left it alone for a while, then turned it back on later, booted without incident, and forgot about it.
Last night it happened again, at which point I searched and learned of the dreaded "boot loop of death" the 6P specifically has had issues with. Hoping that wasn't the issue, I again powered down and tried it this morning, and it only stayed awake for about 5 minutes before going into boot loop. At this point I looked up and applied the fix described in this thread, but to my dismay it had no (visible) effect - I still see the initial "bootloader is unlocked" screen, then the google + open lock icon, repeat ad nauseum.
About all I can do with the phone right now is load into fastboot. The phone has data on it I'd really like to recover, is there a way I can do that from there? If not, is there any way to connect with ADB without getting through a full boot? Are there alternative boot loop fixes, alternative steps to the fix described? I've read several threads here and can't tell if any apply to me, and can't find any answers to the above.
I've accepted that the phone is probably never going to be the same again but I need to get my data off there and do a few quick things before I consign this one to paperweight duty. Thanks in advance
chmmr said:
This is a Nexus 6P (32GB) I rooted shortly after getting it (new) in September 2016, and updated to stock 7.1.2 in August 2017, but I otherwise haven't modified it from its out-of-the-box state.
Until recently, I'd never experienced any issues - no random reboots, battery was still pretty good, etc. Then last week, the phone rebooted suddenly, and appeared to "boot loop". I hadn't yet heard about the issues the 6P has with this so I powered it down, left it alone for a while, then turned it back on later, booted without incident, and forgot about it.
Last night it happened again, at which point I searched and learned of the dreaded "boot loop of death" the 6P specifically has had issues with. Hoping that wasn't the issue, I again powered down and tried it this morning, and it only stayed awake for about 5 minutes before going into boot loop. At this point I looked up and applied the fix described in this thread, but to my dismay it had no (visible) effect - I still see the initial "bootloader is unlocked" screen, then the google + open lock icon, repeat ad nauseum.
About all I can do with the phone right now is load into fastboot. The phone has data on it I'd really like to recover, is there a way I can do that from there? If not, is there any way to connect with ADB without getting through a full boot? Are there alternative boot loop fixes, alternative steps to the fix described? I've read several threads here and can't tell if any apply to me, and can't find any answers to the above.
I've accepted that the phone is probably never going to be the same again but I need to get my data off there and do a few quick things before I consign this one to paperweight duty. Thanks in advance
Click to expand...
Click to collapse
I have the exact same issue. I run the same version operating system as you have an unlocked bootloader otherwise have not modified the typical system install. I did already have the fix applied from an earlier incident but now it is boot looping and won't stop. I have red threads here and there that have advised to apply heat to the phone and that might get it to boot at least to get your data off. Myself I have had no such luck with this technique but perhaps it will work for you otherwise I have since moved on to the OnePlus 6t. A very awesome replacement not to mention at a decent price for more horsepower and storage
Sent from my ONEPLUS A6013 using Tapatalk
Just in case it helps anyone with this phone and issue, I was able to get a couple more boots out of it, enough to rescue some data, by doing the "15 minutes in the freezer in a ziploc bag" trick.
RIP Nexus 6P, shame about the BLOD!

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