[Q] Boot loop after changing battery on Quarx CM10 - Defy Q&A, Help & Troubleshooting

Dear all,
It happened to me twice that after I put my replacement battery (BF5X for Defy originally) in my Defy+ phone, I was stuck in CM boot loop (blue circle). I'm using version cm-10-20130709 specifically. I'm not 100 percent sure if this caused the boot loop, but I couldn't use my phone afterwards even if I changed back to the original battery. Eventually I had to flash it to work again. I'd really like to use my spare battery cause it's convenient.
I'm a little scared to change batteries now, even though I'm not absolutely positive that these issues are linked. Nandroid backup and recovery (teamwin tools) are also not working for me what makes the situation even worse. Did anybody else experience this problem?
Thanks. Best wished! Yours hoopy frood

It seems that changing the battery wont cause bootloop issue.But some times it was.when u get the battery out of the defy,and let it lose power for 2~5mins,the clock in motherboard will be shutdowned(seems that it also had other works been stopped),so at this time, your defy will gets random bootloop(probably yes).what u should do is pull the batt out are get it in again,and boot again!
Sent from my MB526 using xda app-developers app

Related

[Q] Battery is not recognized

Hi all,
Nasty problem with my 1 month old Motorola Defy+ (MB526)
Last weekend I installed ICS9 from Quarx (20120318 build). I did this using 2ndinit CWM. Made an android backup of my stock setup, I did this over my stock SBF 4.5.1.-134_DFP-74. Used the gapps.zip and battery fix.
The system worked pretty well, but time by time it was unstable. When turned off, it had lots of difficulty to boot up again, lots of reboots and 2-3 battery pulls.
I was planning to flash another ROM when I had the time. Yesterday it worked well, started fully loaded, used it as MP3 for long time, when I went to sleep it was 48% (the accu).
This morning, I stepped in car and phone turned out to be dead. Connected it to my car charger, and it came back to life. However, immediate reboot etc. So I decided to (while driving) put back my stock nandroid backup.
It all turned out well. Stock ROM booted but gave the notice (translation from dutch): "Battery of your device is invalid and cannot be charged. Replace the battery with a battery from your Motorola"
hmm, tried it with my USB cable at the office, and now at home again with the normal charger..
What happened? Any ideas on how to solve this?
The complication is that now my device is rooted and has 2ndinit starter, warranty is more difficult.
Solution: red lens battery fix
I’m not sure it’s exactly the same issue, but my Defy+ totally refuses to charge with Quarx CM9 build 20120318 + CM9 kernel from [1].
Unfortunately I noticed only once the battery was dead empty.
I couldn’t even get it to boot with the USB charger pluged in, and the only way I could get it to boot again was to charge my battery pack in friend’s Defy.
Then I applied the « Battery fix for red lens » provided here [1] which kind of fixed the problem. Now the battery charges again, but it won’t charge over 80/85%.
I had done a « Clean battery stats » from the boot menu after installing CM9 before this whole story, so I don’t know if it had any effect.
If anyone knows better please let me know!
The instability you noticed may be due to the Android debug bug… in CM9 builds. You have to leave Android USB debug (from System params->Debug features, translated from french on, otherwise it will lag like hell most of the time and drain the battery due to the init process eating up the CPU.
[1] http://forum.xda-developers.com/showthread.php?t=1432100
Hi, I installed the battery fix immediatly after flashing the Quarx ROM, so that should not be the problem.
In the meanwhile I have been trying some things with the battery calibration software. That one flawlessy sees that my battery is 100% charged (i did that using the mcguyver method). But, resetting the calibration file on the phone won't help.
In the meantime I have been able to delete all traces (2ndinit boot, titanium backup and unrooted my phone) so I am considering to RMA the phone, no matter the fact how long that is going to take..
Unless, someone here has a last excellent advice..
fokkeh said:
...the mcguyver method...
Click to expand...
Click to collapse
Great! You have just fried your battery (like a few others who tried going McGyver). Get a new battery now and don't use the McGyver method again
From what do you draw this conclusion?
The battery showed more problems BEFORE i used the mcguyver method than after. When the problems started I never even heard of the method. I used it to regain life in my mobile (which I am using atm) and charge the battery, which was succesfull. Charger over USB does not work (because battery is not recognized), but that problem occured before the mcguyver.
So until now for me it did not cause the problem, but it helped me to be able to use my phone again, much better than before. I performed the method very accurately and I am 100% sure it did not make contact with connectors it should not connect to.
fokkeh said:
From what do you draw this conclusion?
The battery showed more problems BEFORE i used the mcguyver method than after. When the problems started I never even heard of the method. I used it to regain life in my mobile (which I am using atm) and charge the battery, which was succesfull. Charger over USB does not work (because battery is not recognized), but that problem occured before the mcguyver.
So until now for me it did not cause the problem, but it helped me to be able to use my phone again, much better than before. I performed the method very accurately and I am 100% sure it did not make contact with connectors it should not connect to.
Click to expand...
Click to collapse
Well now that your phone is alive, then go to stock and reclaim warranty! Do RMA.!
Yes I will, restored everything to stock and deleted trace from MicroSD.
But, I am still annoyed by the fact that my phone will be gone for 3-4 weeks
fokkeh said:
Yes I will, restored everything to stock and deleted trace from MicroSD.
But, I am still annoyed by the fact that my phone will be gone for 3-4 weeks
Click to expand...
Click to collapse
I understand that bro!! Even my phone was away for couple of weeks recently! Just pray they don't flash the latest SBF(BL7_ as they did in mine!
Does flashing a full sbf not work either? like this http://forum.xda-developers.com/showthread.php?t=1574651
Puckying said:
Does flashing a full sbf not work either? like this http://forum.xda-developers.com/showthread.php?t=1574651
Click to expand...
Click to collapse
Hi, this morning everything changed again, I decided to give it one more try with the latest Quarx CM9 nightly (20120330), wiped data, flashed nightly.zip, gapps and kernel but waited with the battery. After that I wiped cache, dalvik and battery stats.
Reboot and battery seems alive? very strange. But I don't want the kind of buggy CM9 builds anymore, so decided to put back my 2 hours old nandroid backup, using Restore.
Strangly, battery problem was back again. ****! Than just for fun I did data/cache/dalvik/battery stats wipe on stock, and that did not help either.
Now I am back on CM9 again, but thats running O.K. (battery is working!) but not stable enough for me. CM7 (cannot remember which build) gave the problem as well.
With the latter in mind I think (and thus agree with you) flashing a fresh SBF will probably solve the problem, but I am not 100% sure. I want to be able to put back my stock setup for possible RMA. My stock is 4.5.1.-134_DFP-74 and I cannot find that one on internet. And I cannot put it back to stock otherwise right?
The one Pranks gave you in your post (4.5.1-134_DFP-1321) is that a deblurred one? Because when I put a new one, I would like it to be a deblurred. I hate all the bloatware.
I have no idea, but I think he said it was from his own defy so I am guessing it the complete original blurred thing.
---------- Post added at 01:57 PM ---------- Previous post was at 01:31 PM ----------
I redid the cm9 flashing too and now at least it is telling me the battery is charging. But it stays stuck at a big battery icon and a red led is on.
Will see if it goes past that screen with a bit more juice.
---------- Post added at 02:06 PM ---------- Previous post was at 01:57 PM ----------
Yessss, it started up!
All is fixed. I flashed the proposed stock non-fixed SBF and now running stock 2.3.6 without any battery problems. Excellent The SBF is rootable.
I removed BLUR by editing build.prop as proposed somewhere on this forum. you have to perform full wipe after editing the build.prop) I am very happy with me new DEBLURRED stock. Titanium can remove other bloatwhere like "cardiotrainer".
Happy
fokkeh said:
All is fixed. I flashed the proposed stock non-fixed SBF and now running stock 2.3.6 without any battery problems. Excellent The SBF is rootable.
I removed BLUR by editing build.prop as proposed somewhere on this forum. you have to perform full wipe after editing the build.prop) I am very happy with me new DEBLURRED stock. Titanium can remove other bloatwhere like "cardiotrainer".
Happy
Click to expand...
Click to collapse
Cardiotrainer however for me is one of the most imp app!!

Crashes after 5 minutes and IMEI invalid

Hi!
I've been using cooked ROMS from xdadevelopers for a long time, but since a few weeks (using the last [ROM GNEXUS PORT] JRO03L 4.1.1 RC) my Galaxy started to get crashes every 5 minutes, and after each crash, the battery dropped from 99% to 2%. If I had the phone off for a long time, it recovered part of the battery, but it would never switch on again until I plug it in. At the same time I got the message of IMEI invalid.
Yesterday I changed the ROM to the one of SLIM BEAN 2.5, and I got the same problem.
Does anyone has the same issue? Is it a problem of battery or did I do something wrong in the process?
Thank you very much! Any advice would be highly appreciated, as right now I have no phone :-s
Do you have an IMEI backup? I would recommend going back to GB, restore the IMEI, flash CM9, flash whatever you like.
Sent from my Gameboy Color
Thanks for your answer!!! I have backup of the EMS. I've never restored it, but I'll look for the info in the forum.
I'll follow your advice as right now is the only thing I didn't try.
I'll let you know :-s
pituti said:
Thanks for your answer!!! I have backup of the EMS. I've never restored it, but I'll look for the info in the forum.
I'll follow your advice as right now is the only thing I didn't try.
I'll let you know :-s
Click to expand...
Click to collapse
I meant EFS
Battery may need replacing.. I had exactly the same symptoms about a month ago on cm10 and devil kernel. After trying everything from factory resets, new roms, different kernels and numerous battery calibrations, it was, in the end, a new battery and another complete wipe, going all the way back to froyo via gingerbread and wiping absolutely everything (before reinstalling cm10), that solved my problems. You can pick up a new battery online for about £7.00.
I think a dodgy rom download was the reason of all the problems, of the wrong imei and, maybe, the kernel voltages were corrupt which caused the problems with the battery stats going all over the place and the phone switching off. The constantly having to plug the charger in to get the phone to boot up again was imo what overcharged and ruined the battery.

[Q] Stuck at CyanogenMod animation.

I searched but could not find a similar thread.
On my Defy (green lens), I was running 10.1 July build.
I got a new battery and used it one day. When it was low, I turned off the phone and put my old battery and rebooted. Everything was fine.
Since I have also a battery charger, I charged my new battery through it and when the old one was draining, I swapped it with the new one again and turned on the phone.
Ever since, the phone is stuck on the CM animation.
I would like to know what is the best way forward for me.
s_u_n said:
I searched but could not find a similar thread.
On my Defy (green lens), I was running 10.1 July build.
I got a new battery and used it one day. When it was low, I turned off the phone and put my old battery and rebooted. Everything was fine.
Since I have also a battery charger, I charged my new battery through it and when the old one was draining, I swapped it with the new one again and turned on the phone.
Ever since, the phone is stuck on the CM animation.
I would like to know what is the best way forward for me.
Click to expand...
Click to collapse
Wipe your /data and /cache partitions and reboot. If that doesn't work, wipe everything and reflash the ROM. If you're worried about your data you can make a backup, before wiping, and then restore your apps+data with Titanium backup from the TWRP backup. I wouldn't restore system apps/settings.
Recovery
I did a stock recovery. Somehow it did not fix my problem. Then I did a custom recovery and wiped data, cache and dalvik.
As a result, all my apps were wiped out (not a problem) and perhaps some of my data as well.
However the result was a much better 4.1.2 experience.
Everything works fast - no lags whatsoever.
Only problem is that the icons for People and Messaging in the Dock disappear after some time. This has happened more than 3 times in the last 24 hours.

Nexus 4 turning off when unplugged from charger

Hey guys, i have been owning this piece of great phone for almost two years. But it never gave me a big issue.
Nevertheless, few months back i flashed cm12 and it worked great too.. I had been using it gracefully till i decided to update to cm12.1. So i decided to update, but the update always crashed google play services. The update did not happen automatically so i had to flash the zip through custom recovery (already installed) by myself.
I could not come out of that so i went ahead and did a full wipe and flashed cm12.1 along with gapps. Since then when i am unplugged it goes only to about few minutes (on battery) and shuts down. So, i now decided that this piece of update is buggy and did a full wipe and reflashed the original cm12 zip and gapps which i had placed in the first place. But, to my horror even this time it could not go past the bootscreen even and turns itself off when its about to start up. (Battery is full charged, did an overnight charge as well).One very unusual thing i noticed that almost all the the time i try to power it on it showed me "optimising app X of Y" which is weird. This kinda happens only on first boot.
But if i keep my phone plugged in to ac charge then it works fine.. but only last night it hanged and turned off even on charge. So there i decided that the cm thing is not for me. So i followed this tutorial and flashed the stock 5.1.1 rom (did a full wipe, tried oem lock and re unlocked and proceeded too).
But, i find the same problem same issue!! When unplugged my device, it just turns off even on full battery charge.
Can someone explain me the technical parts of the issue and what has gone wrong and how it can be fixed?
Please, Thanks
EDIT
Last time i locked - unlocked bootloader and proceeded with a fresh factory image flash, the device turned off on boot even when plugged in to my mac and it's hot on the back side
Sounds to me like there''s something physically wrong with the phone, probably the battery. Time for a new one anyway. Lithium batteries degrade with use. After ~500 charge cycles it'll have lost upwards of 20% of its original capacity and might show other signs of wearing out like inconsistent voltages. After 2 years of use, you'll be well beyond 500 cycles. A new battery off eBay is pretty cheap, and some sellers include the needed tools.Go to ifixit.com for a tear-down guide. A hair drier can help soften up the adhesive. The fact that it turned off despite being plugged in to your computer also points to the battery being toast - the USB amperage from a computer is less than the typical wall charger.
If it's not the battery giving you woes, I don't know what it could be.
And FYI, the whole "optimizing app" thing is the OS rebuilding the cache. When you flash your GAPPs package or a zipped Titanium backup it has to build the cache for the new apps. Same as when you do the "wipe Dalvik and cache" part of standard flashing procedure to avoid conflicts. In order for apps to load quickly, Android stores a lot of the necessary data in cache, so when you clear it or have new apps, it has to rebuild the cache. On Lollipop this takes a loooooooong time because of the way ART works.
Planterz said:
The fact that it turned off despite being plugged in to your computer also points to the battery being toast - the USB amperage from a computer is less than the typical wall charger.
If it's not the battery giving you woes, I don't know what it could be.
Click to expand...
Click to collapse
How can i be completely sure that it's the battery which needs to be replaced? The battery shows charge. When i plug in and boot up it shows enough battery power left.
Currently, without external power it does not go past the google screen on boot. When i plug in power while device is off, the battery meter shows just a little depletion from full charge. When turned on, battery level is 82 %
After all , all this hardware mess up can be the consequence of a bad cm flash ?
the whole "optimizing app" thing is the OS rebuilding the cache.
Click to expand...
Click to collapse
I know this. Earlier it was happening on each boot. Now it seemed to be stopped.
By any chance did you have your phone charging while flashing and booting up your ROM?
ChainFires Son said:
By any chance did you have your phone charging while flashing and booting up your ROM?
Click to expand...
Click to collapse
May be? But not the the first time
Nezam said:
Hey guys, i have been owning this piece of great phone for almost two years. But it never gave me a big issue.
Nevertheless, few months back i flashed cm12 and it worked great too.. I had been using it gracefully till i decided to update to cm12.1. So i decided to update, but the update always crashed google play services. The update did not happen automatically so i had to flash the zip through custom recovery (already installed) by myself.
I could not come out of that so i went ahead and did a full wipe and flashed cm12.1 along with gapps. Since then when i am unplugged it goes only to about few minutes (on battery) and shuts down. So, i now decided that this piece of update is buggy and did a full wipe and reflashed the original cm12 zip and gapps which i had placed in the first place. But, to my horror even this time it could not go past the bootscreen even and turns itself off when its about to start up. (Battery is full charged, did an overnight charge as well).One very unusual thing i noticed that almost all the the time i try to power it on it showed me "optimising app X of Y" which is weird. This kinda happens only on first boot.
But if i keep my phone plugged in to ac charge then it works fine.. but only last night it hanged and turned off even on charge. So there i decided that the cm thing is not for me. So i followed this tutorial and flashed the stock 5.1.1 rom (did a full wipe, tried oem lock and re unlocked and proceeded too).
But, i find the same problem same issue!! When unplugged my device, it just turns off even on full battery charge.
Can someone explain me the technical parts of the issue and what has gone wrong and how it can be fixed?
Please, Thanks
EDIT
Last time i locked - unlocked bootloader and proceeded with a fresh factory image flash, the device turned off on boot even when plugged in to my mac and it's hot on the back side
Click to expand...
Click to collapse
Exactly same problem is started with my Nexus 4 ... I really wonder, what is causing this. Meanwhile, have it sorted for you ? is that hardware (Battery) issue?
Nezam said:
Hey guys, i have been owning this piece of great phone for almost two years. But it never gave me a big issue.
Nevertheless, few months back i flashed cm12 and it worked great too.. I had been using it gracefully till i decided to update to cm12.1. So i decided to update, but the update always crashed google play services. The update did not happen automatically so i had to flash the zip through custom recovery (already installed) by myself...
Click to expand...
Click to collapse
I too am facing kinda similar problem.
It first started on my stock Lollipop 5.1.1. I had kept it on charge and when I removed it, it got switched off. Thinking that it might be just another of the multitude of bugs in Lollipop, since I already had lots of problems with it, I decided to flash CM 12.1 Stable on it.
Unlocked bootloader, flashed TWRP recovery, created a backup (using TWRP), wiped data, cache, dalvik and started installing CM 12.1. Now comes the problem, I selected 'restart system' and it did restart and CyanogenMod logo was displayed for few minutes before the phone crashed. I switched it on again normally and the Google logo got displayed, and then again phone got off just after the Google logo. I tried flashing again by same procedure, but this time not even the Cyanogen logo was displayed. The Google logo got displayed and the went off.
Then I decided to restore the backup. Restored it but it still had the same problem at the startup Google logo.
Now I have managed to install CM 12.1, which works fine unless I don't open certain apps. When I open certain apps like Phone or Clock (those are some I have tried yet), it crashes the system.
This maybe a hardware or software problem, but pretty sure it isn't battery problem, coz it retains good charge when I switch it back on after crash.
shazR00t said:
I too am facing kinda similar problem.
It first started on my stock Lollipop 5.1.1. I had kept it on charge and when I removed it, it got switched off. Thinking that it might be just another of the multitude of bugs in Lollipop, since I already had lots of problems with it, I decided to flash CM 12.1 Stable on it.
Unlocked bootloader, flashed TWRP recovery, created a backup (using TWRP), wiped data, cache, dalvik and started installing CM 12.1. Now comes the problem, I selected 'restart system' and it did restart and CyanogenMod logo was displayed for few minutes before the phone crashed. I switched it on again normally and the Google logo got displayed, and then again phone got off just after the Google logo. I tried flashing again by same procedure, but this time not even the Cyanogen logo was displayed. The Google logo got displayed and the went off.
Then I decided to restore the backup. Restored it but it still had the same problem at the startup Google logo.
Now I have managed to install CM 12.1, which works fine unless I don't open certain apps. When I open certain apps like Phone or Clock (those are some I have tried yet), it crashes the system.
This maybe a hardware or software problem, but pretty sure it isn't battery problem, coz it retains good charge when I switch it back on after crash.
Click to expand...
Click to collapse
Since you already unlocked the bootloader, and therefore already wiped everything, you could try flashing a factory image.
I also got the same problem. I thought this is battery problem, so I replaced the battery but problem still there. I thought this is problem of lollipop, never installed CM or anything. It is always running stock android. After that I even downgrade to Kitkat stock version still it is not working. One more thing I noticed is If I don't unlock the device than it will be powered on, but as soon as I unlock it and if it is not plugged in to charger it will be switched off. Any suggestion what should I do?
I have the same thing for several month now.
Always thought it is the dying battery.
theminikiller said:
Since you already unlocked the bootloader, and therefore already wiped everything, you could try flashing a factory image.
Click to expand...
Click to collapse
Just tried flashing Lollipop 5.1.1 (LMY48I) factory image. The same problem still exists. Faced few weird problems on running the first time. Following scenarios explains it exactly...
Not On Charge: Crashes after startup Google logo
Connected to Laptop (USB Charge): Crashes a few minutess after entering "Optimizing apps" screen
On Charger (AC): Completed the install (optimizing apps and setup) without problems
Now I can access the home screen and menu without problems. But when I start any app, phone will go off. Not just apps, at times even when the recent apps menu is opened.
shazR00t said:
Just tried flashing Lollipop 5.1.1 (LMY48I) factory image. The same problem still exists. Faced few weird problems on running the first time. Following scenarios explains it exactly...
Not On Charge: Crashes after startup Google logo
Connected to Laptop (USB Charge): Crashes a few minutess after entering "Optimizing apps" screen
On Charger (AC): Completed the install (optimizing apps and setup) without problems
Now I can access the home screen and menu without problems. But when I start any app, phone will go off. Not just apps, at times even when the recent apps menu is opened.
Click to expand...
Click to collapse
When you flashed the factory image did you do it via fastboot or by flashing a zip file. If you used the zip file I would suggest you do it with fastboot.
theminikiller said:
When you flashed the factory image did you do it via fastboot or by flashing a zip file. If you used the zip file I would suggest you do it with fastboot.
Click to expand...
Click to collapse
By "flashing zip" you mean using "fastboot update" command? ...If so, nope I didnt. I extracted all compressed files and then flashed each of the img's using fastboot. Flashed a total of 6 img files.
shazR00t said:
By "flashing zip" you mean using "fastboot update" command? ...If so, nope I didnt. I extracted all compressed files and then flashed each of the img's using fastboot. Flashed a total of 6 img files.
Click to expand...
Click to collapse
Yeah, I meant flashing each of the image files. If you did that then u don't have any other suggestions.
Sent from my Nexus 4 using Tapatalk
---------- Post added at 20:42 ---------- Previous post was at 20:41 ----------
shazR00t said:
By "flashing zip" you mean using "fastboot update" command? ...If so, nope I didnt. I extracted all compressed files and then flashed each of the img's using fastboot. Flashed a total of 6 img files.
Click to expand...
Click to collapse
Yeah, I meant flashing each of the images. If you did that then I don't have any other suggestions.
Sent from my Nexus 4 using Tapatalk
I m too facing the similar issues. Phone is getting turned off suddenly when not charging, on charging it is working fine. i have done factory reset and also done factory image reset to 5.1.0. i m still facing the same issues. I don't think so it is related to battery. if anyone have the solution then please let me know.
shazR00t said:
By "flashing zip" you mean using "fastboot update" command? ...If so, nope I didnt. I extracted all compressed files and then flashed each of the img's using fastboot. Flashed a total of 6 img files.
Click to expand...
Click to collapse
Try the very basic flash technique by double clicking the flash-all.bat. It's not the same as flashing the imgs one by one.
Battery is the issue. Get it changed. I also faced same problem, and visited LG service center and they changed the battery. Phone working fine now.
gautam.is.sharma said:
Battery is the issue. Get it changed. I also faced same problem, and visited LG service center and they changed the battery. Phone working fine now.
Click to expand...
Click to collapse
Ok so Battery was the problem!! Got it changed, phone working fine now. Thanx all!
Ok guys i confirm that this is a battery issue. I took it to the service center and the guy temporarily replaced battery to show me issue solved... But... there i saw another issue due to which i did not buy the battery. I saw half the touchscreen not working (including the navigation buttons ). The guy at the center told its a h/w issue and i would have to spend 7K on it so i left my phone dead for now. The Question is ... can this be a s/w issue.. or result of bad flash which can solve on reflashing ??
same problem with my nexus ,but one thing i noticed that the phone does not power off while in recovery...Any idea??

Nexus 6p Bootloop Fix/Workaround

After upgrading to Andriod N on the 6p, many of us have been plagued by the Bootloop of Death and/or random reboots. Some have tried RMAs, have purchased new devices or moved to backup devices. Huawei has claimed software is the culprit and Google has stated that it's the hardware. Personally I've tried a clean install of the ROM, Dirty flashing the ROM, clearing the caches, etc.
Nothing has worked... Until now!
I'm days in without a single random reboot or Bootloop.
This advice is provided without warranty or any guarantee that it'll work for you but it may work.
I'm not a developer and I've not tried multiple devices.
Steps:
*Note I'm on the latest Pure Nexus build.
1. If you're currently stuck in a Bootloop, then leave your 6p to Bootloop until it actually starts or until the battery dies. If it starts skip to step 3.
2. If it Bootloops, then intervene occasionally by getting the device to boot into the bootloader (Hold down power and volume down). Once there, attempt to reboot recovery. It'll probably keep Bootlooping but occasionally the device will start up.
3. Once your 6p starts, download the ElementalX apk from the Google Play Store. Don't do anything else. I've only tried this app so it's the only one that I recommend for this "fix".
4. Download the ElementalX kernel through the ElementalX app and follow the prompts in order to install the kernel. Allow it to reboot. *You may be able to complete the following steps with the stock kernel.
5. Once your device has rebooted, open the ElementalX app and click the leaf icon in order to enable power saving. This will lower your CPU's freq, GPU's freq, and most importantly, it will disable the BIG CPU cluster.
After these steps were completed I haven't experienced any random rebooting​ or Bootloops. Yes, this ”fix" hobbles your device but it is still quite functional. I think that on Nougat the constant switching between the two processor clusters causes random restarts and Bootlooping​.
There may be an alternative that will allow you to disable the little CPU cluster instead and not lower the GPU performance. I've not tried any other methods yet.
Specs added thanks to @510jungleboy
Nexus 6p 128 GB
ROM: Pure Nexus 7.1.2 r6
Kernel: ElementalX
Bootloader: Unlocked
Recovery: TWRP
Warranty: Expired
Please comment with results.
Multiple people have reported getting the boot loop of death while on Marshmallow. I think the idea that Nougat is causing the problem was discredited long ago, the fact that its a hardware issue with these phones is widely accepted and that the age of the phone is much more of a factor than the operating system you are running. Most of these phones are experiencing the boot loop of death shortly after the warranty expires, when the phone is 12-14 months old. Your phone is generating less heat since you ramped down the CPU which is likely why it isn't currently bootlooping.
Well...
jhs39 said:
Multiple people have reported getting the boot loop of death while on Marshmallow. I think the idea that Nougat is causing the problem was discredited long ago, the fact that its a hardware issue with these phones is widely accepted and that the age of the phone is much more of a factor than the operating system you are running. Most of these phones are experiencing the boot loop of death shortly after the warranty expires, when the phone is 12-14 months old. Your phone is generating less heat since you ramped down the CPU which is likely why it isn't currently bootlooping.
Click to expand...
Click to collapse
You may be right but I didn't notice any Bootloops or random reboots until I upgraded to Nougat. After putting this "fix" in place my device still gets pretty warm under load but it doesn't exhibit random reboots or Bootloops... Heat didn't seem to be the issue since my phone would reboot into a Bootloop while just sitting on my desk at work with only background tasks running. Regardless, this workaround works for me and it may work for others.
Mine just reboots over and over, for days and days, my bootloader is locked and usb debugging is off.
HOW would one install APk from playstore if their phone can't even load up, aka bootloop of death ? You need to be more specific , like locked bootloader , unlock bootloader ..etc.... smh
Once battery dies what i have to do? (my phone dies two hours ago when I was with a 3% of charge and its bootlooping over and over) Full charge? Another thing?
Note:
1)I'm on the latest Pure Nexus build, stock kernel, unlocked bootloader
2)When i connect to the charger one hour ago the phone shows battery charge mode but stills bootlooping. I'm waiting to battery dies
jhs39 said:
Multiple people have reported getting the boot loop of death while on Marshmallow. I think the idea that Nougat is causing the problem was discredited long ago, the fact that its a hardware issue with these phones is widely accepted and that the age of the phone is much more of a factor than the operating system you are running. Most of these phones are experiencing the boot loop of death shortly after the warranty expires, when the phone is 12-14 months old. Your phone is generating less heat since you ramped down the CPU which is likely why it isn't currently bootlooping.
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510jungleboy said:
HOW would one install APk from playstore if their phone can't even load up, aka bootloop of death ? You need to be more specific , like locked bootloader , unlock bootloader ..etc.... smh
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Click to collapse
Sorry that I wasn't more specific. My bootloader is unlocked and I'm rooted. Users may not need to be in order to get back the device's functionality.
It's a shot in the dark but if a user that is having the Bootlooping issue follows my steps, then they may get back up and running. I've yet to have another random reboot or a Bootloop since...
RyomaEchizen said:
Once battery dies what i have to do? (my phone dies two hours ago when I was with a 3% of charge and its bootlooping over and over) Full charge? Another thing?
Note:
1)I'm on the latest Pure Nexus build, stock kernel, unlocked bootloader
2)When i connect to the charger one hour ago the phone shows battery charge mode but stills bootlooping. I'm waiting to battery dies
Click to expand...
Click to collapse
Since it's died, you'll need to power it on once it's charged for a while. When you power on and it starts Bootlooping, boot into the bootloader and follow my steps. If it Bootloops continuously, boot into the bootloader again and try to get into recovery. It will probably continue to Bootloop. That's what happened to me. I'd come back to it from time to time, boot to the bootloader, prompt it boot to recovery... over and over again. Eventually, it would fully boot up instead (not into recovery).
If it starts DON'T check messages or try to use your phone normally. Instead, follow the steps. Seriously. I made that mistake over and over again.
FYI: This process can take a looong time. Not days but sometimes it was hours until I figured my solution out. I don't know exactly how long it takes because I'd leave the phone Bootlooping and come back to it later in the day.
Many thanks!
Its work for my nexus 6p too
My nexus work normal in interval 1-5% of charge. If charge increase 11% - bootloop...
After enable powersave elementalx, charging to 100% and work well
I have a smartphone. Automatically went into reboot, but did not boot. It constantly reboots. First, the test is reflected that I've been unlocked by the bootloader, and then the Google inscription, and after that the smartphone reloads again. The recovery menu does not enter.
Thanks! Finally something that worked! The big cluster is indeed the problem. I had the porblem that the phone freezes and gets stuck in the bootloop when the battery is above 10-12%. I guess that the cpu disables the big cluster when you are underneath that threshhold(?).
One big problem I am still facing is that I can't reboot my phone and I have to make it discharge until I can boot it up again. Do you have have something that prevents that?
Big thanks again!
Still bootloops
haieb said:
Thanks! Finally something that worked! The big cluster is indeed the problem. I had the porblem that the phone freezes and gets stuck in the bootloop when the battery is above 10-12%. I guess that the cpu disables the big cluster when you are underneath that threshhold(?).
One big problem I am still facing is that I can't reboot my phone and I have to make it discharge until I can boot it up again. Do you have have something that prevents that?
Big thanks again!
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Click to collapse
I followed all the steps but my Nexus 6P still bootloops after crossing 10% charging. Is it possible for you to share your Kernel Manager settings screenshots please?
I too began to experience the boot loop issue literally 8 days after my warranty expired which was 11 days ago today! Have tried flashing several factory images from MM to N and even a saved backup I made from day 1 of having the phone. This method of disabling the big cluster thru ExK has definitely been the furthest I have gotten. Me and my friend(da guy) did find out that in order for the phone to boot up at all, the battery has to be at approx. 6% or lower. In that time is when you must quickly download ExK and activate power saver mode. I just called Huawei support and they did absolutely nothing to help me in this manner. I really do hope that this lawsuit wins in our favor. Speaking of which, does anybody know where we can check for status of this current litigation?
Update: Ordered a new battery and installed it... still bootlooping. This is very frustrating as i have been forced to use my ancient Moto Droid X2 as my daily
I wonder if someone could compile a kernel that always disables the big cluster for those with bootloop problems. Then you could just flash the kernel and not have to try repeatedly to get the phone to boot long enough to install the app.
Sent from my Galaxy S8 using Tapatalk
inneyeseakay said:
I wonder if someone could compile a kernel that always disables the big cluster for those with bootloop problems. Then you could just flash the kernel and not have to try repeatedly to get the phone to boot long enough to install the app.
Sent from my Galaxy S8 using Tapatalk
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Click to collapse
is this possible?
headcreepz said:
is this possible?
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I'll have to look into kernel building, but I'd imagine if you built a kernel that had powersaving as the default profile, it would work.
Got into recovery long enough to flash pure Nexus and root, but haven't been able to get it to boot yet.
Looking forward to one day being able to use it again. ?
Sent from my Galaxy S8 using Tapatalk
A little help!
nicotinic said:
After upgrading to Andriod N on the 6p, many of us have been plagued by the Bootloop of Death and/or random reboots. Some have tried RMAs, have purchased new devices or moved to backup devices. Huawei has claimed software is the culprit and Google has stated that it's the hardware. Personally I've tried a clean install of the ROM, Dirty flashing the ROM, clearing the caches, etc.
Nothing has worked... Until now!
I'm days in without a single random reboot or Bootloop.
This advice is provided without warranty or any guarantee that it'll work for you but it may work.
I'm not a developer and I've not tried multiple devices.
Steps:
*Note I'm on the latest Pure Nexus build.
1. If you're currently stuck in a Bootloop, then leave your 6p to Bootloop until it actually starts or until the battery dies. If it starts skip to step 3.
2. If it Bootloops, then intervene occasionally by getting the device to boot into the bootloader (Hold down power and volume down). Once there, attempt to reboot recovery. It'll probably keep Bootlooping but occasionally the device will start up.
3. Once your 6p starts, download the ElementalX apk from the Google Play Store. Don't do anything else. I've only tried this app so it's the only one that I recommend for this "fix".
4. Download the ElementalX kernel through the ElementalX app and follow the prompts in order to install the kernel. Allow it to reboot. *You may be able to complete the following steps with the stock kernel.
5. Once your device has rebooted, open the ElementalX app and click the leaf icon in order to enable power saving. This will lower your CPU's freq, GPU's freq, and most importantly, it will disable the BIG CPU cluster.
After these steps were completed I haven't experienced any random rebooting​ or Bootloops. Yes, this ”fix" hobbles your device but it is still quite functional. I think that on Nougat the constant switching between the two processor clusters causes random restarts and Bootlooping​.
There may be an alternative that will allow you to disable the little CPU cluster instead and not lower the GPU performance. I've not tried any other methods yet.
Specs added thanks to @510jungleboy
Nexus 6p 128 GB
ROM: Pure Nexus 7.1.2 r6
Kernel: ElementalX
Bootloader: Unlocked
Recovery: TWRP
Warranty: Expired
Please comment with results.
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Click to collapse
I really want this to work. Can you please share your settings? I'm not getting passed 10-12% charge. It makes a loud noise and bootloop till around 6% but runs fine if it's below 10%. I can watch videos and listen to music
Same issue !
haieb said:
Thanks! Finally something that worked! The big cluster is indeed the problem. I had the porblem that the phone freezes and gets stuck in the bootloop when the battery is above 10-12%. I guess that the cpu disables the big cluster when you are underneath that threshhold(?).
One big problem I am still facing is that I can't reboot my phone and I have to make it discharge until I can boot it up again. Do you have have something that prevents that?
Big thanks again!
Click to expand...
Click to collapse
Did u ever figure it out? Also can u show me some screenshots of your settings?
Got mine up and running!! [emoji41]
Here are my settings:
Sent from my Galaxy S8 using Tapatalk

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