yashsingh1/xdaforums huggingface dataset:
[Nexus 5X General] adilau:
Try wipe data/factory reset from recovery....if you can go into

Send from Google Nexus
[Nexus 5X General] joenun:
[MENTION=4524516]truekasun[/MENTION] boot-img-4core-opm1.171019.011-v2.img has broken wifi
[Nexus 5X General] truekasun:
OK. Thanks for the update. This image has exact same coding as the working img. :rolleyes: Strange..
[Nexus 5X General] tylerdurden83:
Is the op procedure for going 8.0 -> 8.1 via ota correct? Cheers!
[Nexus 5X General] androidinme:
Kernel for 8.1

please provide us ex kernel for bootloop nexus that runs on 4 core android 8.1
[Nexus 5X General] steeepph:
Updated to 8.1.0 with the still very good looking N5X !! Thanks a lot !
[Nexus 5X General] sorrysmurf:
No luck.

Phone starts --> I begin setting it up --> 30 seconds later it freezes, shuts down and starts bootlooping.
[Nexus 5X General] TXKSSnapper:
Try using a 4Core recovery (stock or TWRP) to wipe cache and dalvik cache. I had to do this at some point, but don't remember if it was for this boot.img or when I was trying to get ElementalX kernel to work.

If that doesn't work you can try a factory reset, but I use it as the last resort since it wipes data.

---------- Post added at 06:06 PM ---------- Previous post was at 06:04 PM ----------

I've seen posted that exiting the beta should remove the notification. I'm not sure whether or not this will push an ota to your device to "downgrade" to the non beta version, but if it does that ota is supposed to wipe data.

---------- Post added at 06:08 PM ---------- Previous post was at 06:06 PM ----------

Make sure you also updated the bootloader, radio, and vendor images.

---------- Post added at 06:10 PM ---------- Previous post was at 06:08 PM ----------

I have a modified version, but I don't think it is disabling encryption properly. If I have time to figure out why it isn't working I'll upload it here, but I don't know when I'll be able to do it.
[Nexus 5X General] sorrysmurf:
Don't know if im doing anything wrong, so i will just list everything

- flash 8.1 factory image with adb flash-all command

- flash boot img boot-4Core-bullhead-OPM1.171019.011.img

- flash recovery recovery-img-4core-opm1.171019.011.img

- boot into recovery

- factory reset

- reboot into system

After that it works for like 30 seconds and freezes -> shuts down -> bootloops
[Nexus 5X General] TXKSSnapper:
That should be the right process. I may have a solution that could work. On one of the updates I couldn't get the phone to work without underclocking the processor using a modified ElementalX kernel. Does your phone boot if you revert to 8.0 and use the respective modified boot.img?
[Nexus 5X General] sorrysmurf:
Can you link the boot.img? Can't find it. Will try it out then.
[Nexus 5X General] pixbuf:
I flashed bullhead-opm1.171019.011, then boot-4Core-bullhead-OPM1.171019.011.img then TWRP3_1_1_5X.img. Booted into twrp, flashed Magisk, then back to bootloader and rebooted system. Everything works fine now!

Thanks!
[Nexus 5X General] skintigth:
i have and error when flashing manually the system.img file, it says

Invalid sparse file format at unknown block

for so many lines and the shows

error: sparse_file_read_normal: failed to read sparse file
error: cannot sparse read file

it happens in the 8.1 December Image, the 8.0 December image flash and boot fine. I Also tries using

fastboot flash -S 256M system system.img

but it still shows the same error.

And another question, the boot image for 8.1 December works fine or the wifi and Audio doesn't work? i get confused :confused:

Edit:

I downloaded the image file from the First post and doesn't work, the i downloaded from the android page and it worked like a charm, i don't know what's the difference (the sha256 checksum was the same in both) but now i have android 8.1 working in ma nexix 5x BLOD
[Nexus 5X General] matti537:
bootloader, radio, and vendor images?

[MENTION=4442084]TXKSSnapper[/MENTION],

regarding "Make sure you also updated the bootloader, radio, and vendor images."

Not sure what you mean, aren't those included in the full 8.1 image? I never flashed them separately?

Thanks!
[Nexus 5X General] Letitride:
Just to share, I must've one of those with the lucky N5X, running latest 8.1 (OPM1.171019.011) now and smooth, responsive .... thus far, dirty updated since yesterday using Flash Fire, only wipe cache/dalvik.

My steps - downloaded stock Rom from Google link, Flash Fire - radio was done on 2nd. pass. Did not flash new bootloader until reboot into System. Ran ADB to flash TWRP, then flash Magisk & Apk to set up Systemless Root. Reboot & check that everything is settling down, reboot into Recovery & flash the newest bootloader, reboot again & viola, done.

The only thing that I've noticed is TWRP take a little longer to come up (not on the newest one yet - still 3.1.1-0-bullhead) & using stock kernel (was on FK-R48's) Touchscreen responsive definitely more responsive and feel like new, will be using this all day & update/amend if I come across any issues ... hopefully, this might help some on the fence, unsure about whether to do the rom or not.

I see there's a new 8.1 ELemental Kernel, maybe I should or just hold & stick with FK's ?? Any thoughts or feedback, or stick with stock for now - same thought with newest TWRP.
[Nexus 5X General] :
Yes they are included if you run flash-all

If you're flashing manually then you must flash them seperately.
[Nexus 5X General] tylerdurden83:
I flashed recovery-img-4core-opm1.171019.011.img, fastboot says ok, but when I go from bootloader to reboot into recovery, an android with an open tummy and the no commands text appears....
[Nexus 5X General] SlimSnoopOS:
That's the stock recovery. Press volume down and power when on that screen to fully boot into it.
[Nexus 5X General] tylerdurden83:
My bad... I don't think that I ever used a stock recovery before :D

Does the TWRP 4 core in the op (for 8.0) work with 8.1? Dont really have much use for the stock one tbh
[Nexus 5X General] TXKSSnapper:
Some people have been manually flashing the partitions so that they don't have to wipe data. This comment was mostly targeted for those people.

---------- Post added at 12:09 AM ---------- Previous post was at 12:07 AM ----------

It should work fine.
[Nexus 5X General] _Ghost:
[MENTION=4442084]TXKSSnapper[/MENTION] I know you are trying your hardest but could you try to modify the last version of ex or some custom kernels for 8.0.0? I'm kinda of itching to try custom ROMs but the boot.img I tried to but it gave bootloops . And also could we rise the thermal limits via boot.img ? If this thing heats while use , it's so laggy due to throttling .
[Nexus 5X General] Jrobah:
8.1 with TK's boot image works fine for me
[Nexus 5X General] crashDebug:
It seems my 5x is completely immune to every kind of patch in this and in the older thread. It has all the symptoms of the BLOD - sometimes it freezes and reboots at the boot animation, sometimes the system goes up for a brief while, and so on. But the modified boot images just does not fix that.

I just tried with the 8.1 patches, flashing in order:

stock image with dec patches

modified boot img

modified recovery

to no avail.

I also made different tries with older images and patches, but the results are always the same. I'm starting to think that in my unit it's the flash memory that is broken. Is anyone is in my same situation? Open to suggestions.
[Nexus 5X General] adilau:
Try wipe cache from recovery

Send from Google Nexus
[Nexus 5X General] raaghuu:
1. Download 8.1 Image, 4 core Boot image from the first post, modified TWRP 3.1.1 from https://drive.google.com/open?id=0B7TP6GXR0wAVdmFIX1hrck5rOFE (original forum post https://xdaforums.com/nexus-5x/general/untested-nexus-5x-bootloop-death-fix-t3641199)

2. Situational: Flash the Custom TWRP with fastboot, if not installed.

2. Do a complete wipe from recovery. System, data , dalvik cache, everything.

3. Reboot to bootloader.

4. extract 8.1 image and flash using flashall.bat/.sh

5. Flash 4 core boot image.

6. Optional: Flash Custom TWRP again. Download Latest Magisk and flash from recovery for rooting.

Hope this helps.
[Nexus 5X General] crashDebug:
thanks for the reply but nope :) still happily bootloopin'. This sorry guy has to be the unluckiest phone ever... display is broken (owner's fault), battery is completely dead by early afternoon and now this lol
[Nexus 5X General] TXKSSnapper:
ElementalX 5.06 for Android 8.0.0 (modified for 4 cores):

https://drive.google.com/open?id=1BD-ETYbLGKQ7O8Uw1K_omweczoXdgLbe

ElementalX 6.00 for Android 8.1 (modified for 4 cores) [NOTE: I believe that this has an issue disabling forced encryption. If after flashing it reboots to recovery instead of the os, I don't have a fix yet so you'll need to flash back to your previous kernel.]:

https://drive.google.com/open?id=1oMHf1IHmYk7EN1lrf9-Huw9e-sIsqIYz

Edit: I don't know enough about thermal throttling to modify it at this time, and I'm in the middle of final exams so I won't have a chance to consider it for at least a week.
[Nexus 5X General] afzi:
Can anybody Provide the video link I am confused about method my 5x stock on Google logo.
[Nexus 5X General] calvxrr:
December version of 8.0 has wifi problems. GPS doesn't work and I do not have incoming sound notofication.

Wysłane z mojego Nexus 5X przy użyciu Tapatalka
[Nexus 5X General] tylerdurden83:
I flashed the 8.1 factory image via the flash-all.bat, but after having removed the -w flag from it, so it didn't wipe anything.

After that it rebooted by itself, not that it'd have passed the Google logo ofc, so I turned it off and back into bootloader.

Flashed the 8.1 modified boot image, rebooted, win, haven't lost a single thing and it all just works, just as if I applied an OTA update to a normal phone.

I didn't even wipe cache/dalvik as everything is just working no problem.
[Nexus 5X General] joenun:
[MENTION=4442084]TXKSSnapper[/MENTION] I flashed the modified EX 6.0 kernel and she booted right up ? nice work!
[Nexus 5X General] X3NOM:
same situation here :(
[Nexus 5X General] sorrysmurf:
Same. Guess some phones are just dead.
[Nexus 5X General] :
This is true. If no earlier (7.x) fix works then there may be some more broken cores.

If you can somehow find out what cores are not functional, I may try to disable a few more cores to see if it helps.
[Nexus 5X General] tylerdurden83:
After a couple days of usage I must report that the modem sometimes dies and I need to turn on and off airplane mode to force it to work again, really not good...
[Nexus 5X General] SlimSnoopOS:
Flash a different radio through fastboot.
[Nexus 5X General] Addicted2Bass:
how do you boot? i have to set the big clusters on my phone?
[Nexus 5X General] Jeremy.Stewart85:
So this fix worked for me for a couple of weeks and then it finally died completely on me. I'm now stuck on a black screen/QC QDLoader mode and won't really ever get past that. Thanks again for letting me limp along for a little while longer, T1mb3.

If any of you do get this working I would advise you to start looking for a new device pronto while you stretch the 5X as long as you can. I wound up going for a Moto G5S Plus because BestBuy had it on sale for $239 - $50 with a new activation = $189 (had to ditch Fi anyway since there were no cheap options for me anymore there, went to Verizon prepaid for the time being).
[Nexus 5X General] pkelly517:
Or, buy another phone that doesn't require a hack just to boot.

Seriously, if you use this hack to do anything but to grab the data from your phone, you are gambling every morning. Every single morning. And again throughout the day. Every single day.

I mean no disrespect to the guys that figured this out; they truly rock to find a temp fix to reanimate our bullheads.

It's a temporary fix. Stop acting like it's a solution.
[Nexus 5X General] lucraraujo:
I managed to bring my N5X back to life, but I'm not being able to install Netflix nor use Android Pay. I know that Google implemented some security checks in the Android system and, because of the changed boot and recovery, the Android system thinks that my N5X is no longer safe to use these apps.

Is it possible to by pass these securities checks so I can use Netflix and Android Pay?

BTW, thanks for the awesome job!
[Nexus 5X General] merothh:
Install magisk I guess ?
[Nexus 5X General] Xmata:
Can you release the version of twrp 3.2.1 for 4 cores please? I have lost the volume control and I need the recovery touch (adb sideload) to update. Thank you for you work
[Nexus 5X General] afzi:
i am confused about method of installation, i have a 5x please possible 2 any videos link regarding installation or method of fix boot loop issue
[Nexus 5X General] rida1148:
can I root my device (4 cores) ?
[Nexus 5X General] tyroneballz:
radio

What radio do you recommend???

I have wifi problem with 8.1 december thanks
[Nexus 5X General] :
Yes you can. Just flash supersu/magisk in twrp
[Nexus 5X General] TasCani:
Thanks for your work on the patches and the discussion. Works great on two 5x.

I understand that [MENTION=2358096]virtualkev[/MENTION] asked a quite similar question and I just need to make sure.

I did the following:

- flash 8.1 factory image with adb flash-all command

- flash boot img boot-4Core-bullhead-OPM1.171019.011.img

- flash recovery recovery-img-4core-opm1.171019.011.img

1. Can I relock my bootloader (oem lock) or will that brick my phone? [In this case I use the "custom" 4core recovery.]

2. Can I lock the bootloader when I flash the stock recovery on it, of course the boot 4core would remain on the phone. [In this case there is just a "custom" boot img.]
[Nexus 5X General] rida1148:
thank u, and dose Magisk wipe my data ?
[Nexus 5X General] tylerdurden83:
Radios have nothing to do with wifi
[Nexus 5X General] theGeekyLad:
In both cases you can lock the bootloader, nevertheless with an unsigned boot image, you'll be presented with the warning page at boot saying your device is corrupt but you've just got to ignore that! But it works fine either ways.

---------- Post added at 04:30 AM ---------- Previous post was at 04:24 AM ----------

Flashing Magisk won't wipe your data. Unless you TWRP is encrypted!
[Nexus 5X General] :
No
[Nexus 5X General] arrche:
@ T1mb3

Thank you for your amazing work,My Nexus 5x is working fine in Android 8.0 - 4 core version.

Currently it is prompting for a new big update Android 8.1 (pls see the image : https://ibb.co/cFqZkR )

Should i go with OTA in the phone ? What should be the next step then ?

Thank you
[Nexus 5X General] :
All credits to [MENTION=4524516]truekasun[/MENTION] at this time (and the original solver) :highfive:

You can install that update I think. I didn't try the OTA but I quess it should be fine. Just remember to flash stock recovery if you don't already have it. Also you must flash the new 4core image posted here (read first posts).

If the update fails, you must do it manually.
[Nexus 5X General] theGeekyLad:
The OTA would get you back to your BLOD! After flashing it go back to your bootloader and flash the right image posted by T1mb3 as mentioned by him!
[Nexus 5X General] RAVruS:
I was in the beta program Oreo. After the firmware release of 8.1, I also had a fun similar window with the update, I did not want to do the update, so as not to lose data, and now noticed that the offer to update the system has disappeared.

I think Google saw that the meknah had a release installed and removed the update for me.
[Nexus 5X General] :
You can flash updates manually and not lose data
[Nexus 5X General] rida1148:
---------- Post added at 04:30 AM ---------- Previous post was at 04:24 AM ----------

[/COLOR]

Flashing Magisk won't wipe your data. Unless you TWRP is encrypted![/QUOTE]

I wont flash the TWRP becase I will not enabel to ota update again, and I tray to boot withe it but it didnt work (fastboot boot <img file name>) the device reboot and start normale without boot to recovry mode (TWRP ) ?

PS: on bootloader i get secure boot enabled
[Nexus 5X General] Xmata:
Any sugestion?

Anyone know how to modify a recovery.img (TWRP)? Thanks
[Nexus 5X General] TXKSSnapper:
unpack the image using image kitchen, make the changes to the files as listed in the original post. repack the image.

I've already done it, but some have been posting in the twrp thread that the latest version is not restoring from backups properly. If you don't need the latest version you should be able to use the version from the original fix thread.
[Nexus 5X General] RAVruS:
I meant the beta test of Android. There, the rules say that when you return to a stable version of the device, all data will be deleted. I guess then you just need to do data recovery, but already on a stable version, but it all takes time.
[Nexus 5X General] Xmata:
Thanks!

Excellent dear, I'm going to try the first thing. On the other hand, I tried the recovery of the original post (TWRP3.1.1 4 cores) with android 8.1 and fix (boot for 4 cores), but it did not work. Sorry for my baddddd english
[Nexus 5X General] _Ghost:
[MENTION=4442084]TXKSSnapper[/MENTION] Ex Kernel V5.x on custom ROMs gives bootloops . Boot logo loads and then bootloops and then boots to recovery.
[Nexus 5X General] :
You have to disable encryption.

If I remember correctly it caused me same problem..

To disable, wipe data..
[Nexus 5X General] _Ghost:
Phone has encryption disabled and is not encrypted.
[Nexus 5X General] TXKSSnapper:
Yeah, I've seen that sometimes. Everything that I've seen when it happens points to it not disabling encryption properly. I haven't had time to properly debug it. I just wrapped up finals this morning, so hopefully I'll have some time to look at it next week.
[Nexus 5X General] _Ghost:
Is there any temporary solution? I'll be willing to test this week for any potential fixes.
[Nexus 5X General] rebel1699:
Does the December 8.1 version have any prerequisites if coming from 7.1.x? I've flashed the system images and the corresponding 1.171019.011 4core boot image, but still stuck at boot animation for an endless time

Edit: Got it going. What is causing some devices wifi to not work, but others to work fine? Anyone been able to narrow that down any? Running the modified ex 6.0 on Dec 8.1, and while wifi connects, it shows no internet. Was same on stock modified boot. Any known workarounds?
[Nexus 5X General] iorga_ciprian:
Hi. I managed to flash everything needed and now the phone works without any problem. Do you guys know what it will happen if I reset the phone to factory? It will enter bootlop again and I have to flash again everything? Or it will work without problem like just after I flashed? Thanks
[Nexus 5X General] Mavrec:
I reckon it'll be just fine, a factory reset will not bring the old android version, it'll just wipe everything and be as new WITH the latest android version.
[Nexus 5X General] paulicu.andrei:
how did you got it to work? I'm stuck in endless boot animation after flashing boot and recovery images
[Nexus 5X General] rebel1699:
What got me going was to fastoot flash the 4 cores twrp image and wiping data, cache, ayatem and dalvik. Then, it finally booted
[Nexus 5X General] :
Some claim that the other bootimage for 8.1 works for them
[Nexus 5X General] rebel1699:
The right one works fine. My dumb ass still had the internet blocked from it through my router from when my daughter was using it before the main cores went down.
[Nexus 5X General] Ziuzic:
It worked

Thanks a lot for helpful information, it finally worked on my Nexus 5X

My device started to have bootloop problem 2 months ago (device was bought as new, 1.5 years ago). So basically after 1.2 years it was bricked :)

Somehow, one day, device started by himself for about 10 minutes. I was lucky and managed to enable OEM in device settings.

Then the fun part began

I tried many images from google and didn't work out (up to android 8.0). Then after each try, device lasted for one hour, then a few times was up for 15-20 minutes, then it was completely bricked and bootloop (Google logo continuously reloading) was his favorite screen. I was ready to sell it apart, piece by piece :)

I was waiting for Android 8.1 to try with it. I gave it last chance, after finding/reading this article. Evrica, it worked:

- bullhead-opm1.171019.011-factory-3be6fd1c.zip - System image for Oreo 8.1 (OPM1.171019.011, Dec 2017)

- boot-4Core-bullhead-OPM1.171019.011.img - 4 core version of the boot.img of Oreo 8.1 (Thanks to [MENTION=4442084]TXKSSnapper[/MENTION])

- recovery-img-4core-opm1.171019.011.img - 4 core version of the recovery.img of Oreo 8.1

Might be the " boot-4Core-bullhead-OPM1.171019.011.img - 4 core version of the boot.img of Oreo 8.1 (Thanks to [MENTION=4442084]TXKSSnapper[/MENTION]) " I don't know, you tell me if you have an idea.

Thanks to everyone who contributed to this

The device is still running, second day. I hope it will last a few months, let's see...

NOTE: the only issue that I see so far is that device shows UI from 7.1. In the settings it is displayed Android 8.1. Any ideea ?

Please check screenshot bellow [IMG="screenshot"]https://image.ibb.co/eHt46b/Screenshot_20171229_124043.png[/IMG]
[Nexus 5X General] _Ghost:
[MENTION=4442084]TXKSSnapper[/MENTION] Any update on the custom kernel issue ?
[Nexus 5X General] AVNascimento:
I have the same issue.

how did you got it to work? I'm stuck in endless boot animation after flashing boot and recovery images

i do all this steps:

- flashbullhead-opm1.171019.011-factory-3be6fd1c.zip - System image for Oreo 8.1 (OPM1.171019.011, Dec 2017)

- flash boot-4Core-bullhead-OPM1.171019.011.img

- flash recovery-img-4core-opm1.171019.011.img

Someone can help me?
[Nexus 5X General] pkelly517:
Wipe data.
[Nexus 5X General] AVNascimento:
Wipe data,calvik,system and cache via twrp?

If this, i do and when i start again, the smartphone stay in google screen. I do this and when power on, the google screen stay in 10-20 min.
[Nexus 5X General] pkelly517:
You wiped system.

You have nothing to boot.
[Nexus 5X General] AVNascimento:
Wipe via twrp?

You can explain step by step please?

Can be the 8.1 version
[Nexus 5X General] The_mamba:
First off, huge thanks to OP for keeping this alive. I just had the BLOD happen last night and I was able to save my phone by just flashing the modified 8.1 boot image and wiping data.

Quick question though: Is there any chance that there is a modified version of Elemental X floating around that works with the 8.1 image yet? I'd like to play around with overclocking the small cluster to see if that can boost performance a little. Thanks!
[Nexus 5X General] mauman1974:
What about future automatic system updates

Hi,

thank you very much for the guide, I could fix my Nexus 5X successfully using the November patch.

One question, after applying the 4 cores patch is it still possible to automatically update the phone using system updates, I guess not, isn't it?

Maurizio
[Nexus 5X General] :
I haven't tried but updating would restore the stock bootimage and cause bootlooping and the update could fail
[Nexus 5X General] :
I can have a look in a few days. Have you tried the 8.0 modified version?
[Nexus 5X General] The_mamba:
I did indeed but unfortunately it would not boot and I had to reflash the December system image and wipe data to get it to boot again.
[Nexus 5X General] rebel1699:
What worked for me was flashing the 4core twrp recovery. After fastboot flashing system image, 4 core boot img and custom twrp, reboot directly into twrp. Wipe data, cache, dalvik. Now reboot and it should boot into os. If you still have issues, wipe internal (/data/media/)
[Nexus 5X General] _Ghost:
Could anyone try testing the modified ex in this way ? Flash the rom with the kernel and then flash magisk . If it's a encryption issue then if magisk disables forced encryption , the Rom should boot ? [MENTION=7280252]T1mb3[/MENTION] Would this work in any chance ?