yashsingh1/xdaforums huggingface dataset:
[OnePlus 3 Questions & Answers] sashamalla:
Okay so I'm new to all this rooting and stuff and I was messing around with TWRP and now my when I turn on my OP3, it shows "md5 checksum failed" with "cache:failed", "system: failed", "system_aging:failed" and goes into a bootloop. And I cant even boot it to recovery mode. It's driving me crazy!
[OnePlus 3 Questions & Answers] ghostofcain:
Can you still boot into fastboot? Turn on with volume up, if so reflash TWRP, and then restore your backup, or flash a stock rom.
[OnePlus 3 Questions & Answers] sashamalla:
I can boot it into fasboot and I tried flashing TWRP, OxygenOs and even Cyanogenmod. Still didnt work.
[OnePlus 3 Questions & Answers] ghostofcain:
Didn't work how, are you getting errors in console?. Can you flash TWRP and boot into it?
[OnePlus 3 Questions & Answers] Joyo-rocker:
You have successfully bricked your device.

Don't worry use a Oneplus download tool to download stock firmware to your device in download mode.

https://forums.oneplus.net/threads/guide-mega-unbrick-guide-for-a-hard-bricked-oneplus-3.452634/

The method 2 worked fine for me.

Go ahead..!!

Hope it helps
[OnePlus 3 Questions & Answers] ghostofcain:
A bricked device is broken unable to be fixed, this is a soft brick as you can still get it to respond.

For future users if you broke something and want help please supply at least the following.

1. What you did, yes it's embarrassing but maybe someone can undo it.

2. What you are still able to do, can you access recovery, fastboot or adb.

3. What you've tried, if you try and flash something and get an error message let us know.

The more information you supply the better the chances someone can help. A simple my device is bricked help can't achieve much.
[OnePlus 3 Questions & Answers] flobiwahn:
So I'm telling now how I got to this situation:

I'd installed a rooted OxygenOS with TWRP. I don't know how I thought it was a good idea to lock the bootloader after I installed TWRP, still did it. After that I was able to load in to fastboot, nothing else. Followed Method 1 on the link from Joyo-rocker and came to the posters message. Now I'm trying Method 2. Will update this post.

Edit: If your phone shows the boot messages "md5 checksum failed" with "cache:failed", "system: failed", "system_aging:failed" you need to fully reload your ROM over the unbrick tool. Look for Method 2 in Joyo-rockers link in this post (cant post links yet)
[OnePlus 3 Questions & Answers] nikexv2:
Had the same issue, method 2 works fine.
[OnePlus 3 Questions & Answers] kovacsabesz:
Hi

I have same issue!!!

I tried the secund method! But the same.....after the 1+ logo :

cache: failed

boot: failed

boot_aging: failed

system: failed

md5 checksum failed

I opened the Msmdownloadertool v3.0.2 using Admin privileges!

Volume up 10s connected phone usb cable....

press 'start" ....after I get green indicator in the tool...My phone rebooted....and I got these messege ! .....and my phone turn off.....

Please help

Please...
[OnePlus 3 Questions & Answers] nikexv2:
You didnt download the right tool, method 2 includes every needed partition and should revert you to full stock 3.1.2
[OnePlus 3 Questions & Answers] kovacsabesz:
Oh,

Done.....:)

I fixed it! Thanks guys! :)
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Deleted

---------- Post added at 09:07 AM ---------- Previous post was at 09:00 AM ----------

Go to the folder where the recovery tool.exe is. Boot your phone into Fastboot.

Search for cache.img, system.img, system_aging.img and put them in your ADB file folder

Type this:

Fastboot devices > doesn't show up? No worries I'll help you later this day just let me now.

Fastboot flash system system.img

Fastboot flash system_aging.img

Fastboot flash cache cache.img

If it boots and you don't have Sim and WiFi. Then reflash Oxygen OS and don't boot it! Boot it into Fastboot and type:

fastboot erase modemst1

fastboot erase modemst2

Now boot it and u can do whatever you want!
[OnePlus 3 Questions & Answers] TheLoverMan:
Same happened to me, reinstall windows and start again with method two, was a driver issue
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Why would you install windows instead fix the driver thing.
[OnePlus 3 Questions & Answers] TheLoverMan:
Was having problems with uninstalling the drivers. They would always come back so only way I could do it was by a reinstall of windows.
[OnePlus 3 Questions & Answers] punfil:
This was already mentioned, as i remember. Just let me search for a minute cause i had this same issue.

http://xdaforums.com/attachment.php?attachmentid=3875375&d=1473889816

Flash this TWRP, it is 3.0.2-19 for temporary but i use it as daily.
[OnePlus 3 Questions & Answers] Keshavprabhat95:
Hey! Im having the same problem. Please help me with the way you did, Im Stuck :( . please help
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Ye well there is a driver enforce mode link even in the hardbrick guide... No need to reinstall Windows lol
[OnePlus 3 Questions & Answers] Pratik121:
I Unbricked Successfully

I unbricked the phone successfullly but now during startup its asking me password. The one I had isn't working and I dont know what to do. can anyone help me here? Can I find a Password in the recovery tool?
[OnePlus 3 Questions & Answers] Puddi_Puddin:
You see.. OOS had force encryption. Go to Fastboot and type "fastboot erase userdata" then go to recovery and flash OOS or any other rom.. Password should be gone now.
[OnePlus 3 Questions & Answers] ashokmor007:
Follow this guide:

[YOUTUBE]BvfA5WrVDQM[/YOUTUBE]
[OnePlus 3 Questions & Answers] EOConnor25:
I too have this problem! I was worried that I'd have to just trash my OnePlus 3 that someone gave me...i so love the phone! I have tried method one from the link that was provided on the OnePlus Net forum. but I got the green wording in the MSM toold that said download complete, then did as directed and disconnected my phone, it showed the nePls logo and then went RIGHT back to the messages about cache....md5.....etc. I haven't tried method 2 yet....but will attempt it tomorrow and hope it works. If anyone has any pointers in regards to these methods (how long to keep your phone attached to the computer after the green highlighted words appear,....whether or not you have to wait until the "Stop" button on the MSM app goes grey.....{indicating it has stopped}....and other things please post them here and let me know).......I'd like to have this done as quick as I can.. thanks to all who contributed information on this issue!

:(
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Method 2 should do the trick. If not then you are not following the guide properly. Make sure you do not skip the first 8 steps they are mainly the cause of these "cache:failed" stuff.. I have been there as well.
[OnePlus 3 Questions & Answers] EOConnor25:
Thanks so much!.....I will let you know how it goes when I've got the other laptop (the one with Windows on it...and not Linux!..LoL!) in ftront of me....I'm gonna be SURE to follow EACH and EVERY step in the order they're given!!
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Cool! The driver part and driver signature is really important! Windows tends to use wrong driver.. Make sure to quote me so I get a notification!
[OnePlus 3 Questions & Answers] EOConnor25:
Bricked OnePlus 3

I guess that's what you mean when you say "quote"?....Just wanted to let you know....IT WORKED!......your advice was spot on PERFECT!.....thank you SO MUCH!....God Bless...have a wonderful day / night and thanks again!!!!

Cheers!!

:good::good::good::good:
[OnePlus 3 Questions & Answers] Puddi_Puddin:
Np m8!
[OnePlus 3 Questions & Answers] Moonracker:
Helo,

I have problem with my OnePlus 3

Official forum can't help me ?!

1. In normal using i get camera internal error, I reset my phone and get black scren.

I use this toturial to unbrick device - and phone back to alive.

2. In few day i reset my phone and get again bricked nothing worked ...

3. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

4. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

5. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

6. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

7. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

8. Use again tool to unbrick ... install twrp and latest firmware and after one day again get black screan briced

(...)

14. Trying install lineageOS 15.1 same problem

15. I Write this post

Anyone can help me ??
[OnePlus 3 Questions & Answers] TNSMANI:
Replace your camera and use Method 2 of the Guide again.
[OnePlus 3 Questions & Answers] Moonracker:
I replaced camera and use Method 2 of the Guide again, and same problem ... phone is dead
[OnePlus 3 Questions & Answers] TNSMANI:
You have to be patient and follow the instructions of the Unbricked Guide (method 2) carefully. Don't skip any steps. You may also have to repeat the process a couple of times.
[OnePlus 3 Questions & Answers] Moonracker:
I connect the phone to the computer and run MsmDownloadTool ... The tool does not report any errors ...

I hear the sound of disconnected phone in the loudspeaker and in a moment the sound of connection and the process starts again, and again ... I left this phone connected for 1 hour ... the problem is the same.
[OnePlus 3 Questions & Answers] Kamikaze_Hulk:
Upon restart or the first call made from the phone, network strength goes to no service and disconnects. Next call I make works fine after that. I'm using resurrection rom and a clean install. I have since installed xposed framework still the same. J also had an issue where the front camera disappeared as well from a camera choice... Any help?!
[Tilt, TyTN II, MDA Vario III Windows Mobile ROM De] amicicixp:
HTC Kaiser in Italian language? Help me

:confused: :confused: :confused: :confused:
[Tilt, TyTN II, MDA Vario III Windows Mobile ROM De] ciassi83:
Not yet

There is another thread for this argument:

http://xdaforums.com/showthread.php?t=339562

patiently wait ...
[Fire Q&A, Help & Troubleshooting] bdfull3r:
Its not a bootloop or brick, it was a stock unrooted tablet that just stopped working. It doesn't turn on at all. No logo splash, recovery or fastboot. Its past the 90 day warranty. Anyone have any ideas?
[Fire Q&A, Help & Troubleshooting] DB126:
You've probably tried most/all of these:

- swap out cable/charger (dead battery)

- long press power for up to 3 min (on some devices forces a master reset)

- connect to host and see if anything is recognized (if so what device?)

- pop off back cover to assess physical battery connection (unlikely but what the heck...)
[Fire Q&A, Help & Troubleshooting] jdeandeck:
What happens when you plug it into a PC? Could be dead battery with a bad usb port, one way to tell is to plug it into the wall charger and see if it gets warm.
[Fire Q&A, Help & Troubleshooting] bdfull3r:
no damage, pc doesn't recognize it, no damage that I could see, tried master reset but nothing happens
[Fire Q&A, Help & Troubleshooting] DB126:
Tough break; sorry for your loss. Like most inexpensive consumer electronics spontaneous failures do occur.
[Fire Q&A, Help & Troubleshooting] bdfull3r:
I figured but it was worth a shot
[Moto E Q&A, Help & Troubleshooting] lionking5202:
Hey guys, Im facing a really big and annoying problem in my moto e, I installed cm 13, and then flashed micro gapps, and when I restarted my phone, Im continually got this message " unfortunately Google play services has stopped " I gave it all permissions in settings, still getting this error, I tried installing cm 13 four times, and also tried pico gapps ( the smallest pack of gapps) but still getting this error, please help me, it is very annoying, you can't think how many times this error showed up while I wrote this question!!!!!!!! Please help!!!! Will be very thankful to you!:(
[Moto E Q&A, Help & Troubleshooting] hetor99:
Make a clean flash with the latest build of cyanogebmod and the gapps.
[Moto E Q&A, Help & Troubleshooting] sikoo1996:
Flash ROM and gapps simultaneously, I.e . in a single session..
[Moto E Q&A, Help & Troubleshooting] Ninad Joshi:
Unfortunately google play stopped

I've downloaded the latest cm build and also the gapps as you said,but do i need to wipe all my data before flashing it??please help ASAP!!
[Moto E Q&A, Help & Troubleshooting] drs22:
Yeah. Wipe system, data, dalvic cache and cache and flash the ROM+gapps
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] raimondomartire:
Step 1:

Open System App

Go to: About > Status

Make a note of your 'Serial number'

Check if your serial is either 6 or 8 digits. If the digits are 8, you can use the Z1 unlocking tool method to unlock your ZUK Z2 Pro.

Note: Serial numbers with 6 digits after unlock command must use also CM ZUK Z1 command references. Another guide is being prepared for this at the moment. Please bare with us.

Step 2:

Obtaining the tools..

Visit http://developer.zuk.com/bootloader

In the box below the 'Z1' drop down enter your 8 digit serial number from Step 1. Enter your email in the box below the serial number and check both the boxes. To submit press the Blue button.

You will then see the following popup message box:

解锁bootloader

解锁文件已经发送到您的邮箱，请查看邮件并进行下一步。

Note: Ensure you are logged into your ZUK account to process this request. Also please pay attention for an email from ZUK.com - Check SPAM folders etc for this email as in some cases it lands inside this folder.

Step 3:

Unlocking the phone...

With the email now received it's time to do some dev stuff...

尊敬的ZUK用户，您好

&nbsp您已经在ZUK开发者平台申请了解锁您的ZUK智能设备的bootloader。

&nbsp附件是适用于您的设备的解锁文件，请妥善保管。

&nbsp请访问这里了解如何进行解锁操作。

&nbsp如果不是您本人操作或者您改变主意，请忽略这封邮件，您的设备将不会受到任何影响。

ZUK开发者平台

Download the unlock_bootloader.img from the email and place it somewhere easy to find for flashing.

Next step, boot your phone into Fastboot mode. You can do this via:

adb reboot bootloader

Next run the following command:

fastboot -i 0x2b4c flash unlock unlock_bootloader.img

You will see:

target reported max download size of 1610612736 bytes

sending 'unlock' (0 KB)...

OKAY [ 0.037s]

writing 'unlock'...

OKAY [ 0.053s]

finished. total time: 0.090s

Now run the following:

fastboot -i 0x2b4c oem unlock-go

You will see:

...

OKAY [ 0.041s]

finished. total time: 0.041s

Finish up with:

fastboot reboot

NB if you have 8 digits on serial number, just put that

if you have 7 digits, add a 0 (zero) at the end

if you have 6 digits, add two 0 (zero) at the end

Credits: My work and image from zukfans.it and zukfans.eu
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] iceagezero:
I have ZUI 2.0 Beta install and can confirm this is working even for beta devices.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] snugroho3:
How to sign up in the zuk developer website? I entered my phone number in sms verification field but I never get any sms. Please help..
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] miheilo:
Had the same issue, until I found out, you can register via email on their main website (google translation of webiste helped me ^^)
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] Nordlord:
How long does it takes till the email arrives?

I´ve waited now one day and nothing happened. And the Spam-Folder is empty too ;)
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] Swarai:
Is there a driver that I need to download? My computer is set up for adb (verified with my OP3) and it cannot see my z2 pro at all.

---------- Post added at 13:21 ---------- Previous post was at 13:14 ----------

You can contact them via email also. That's what I did to get mine.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] M4zinkaiser:
The 'fastboot -i 0x2b4c flash unlock unlock_bootloader.img' don't do anything from my shell there is no information on going.

I bet some issue on the -i 0x2b4c how can I discover the ID of my device? Thank you.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] zyvex_14:
Hello,

It has been almost one week I requested Zuk to get the booloader unlock file but so far no email in my mailbox (spam included)… :(

How did you contact them directly via email to get it?

What is the email address you used?

Many thanks
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] Swarai:
devworld@zuk.com
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] zyvex_14:
Hi,

Thanks for the email address.

I have just sent them the request.... Let's see now how long it will take :)

Will keep you posted.

Edit: I read on some other forum that it doesn't work with gmail and hotmail adresses.

that is the reason I didn't get the message back.

So I created a GMX address and within 2sec I got the file... I can now unlock my bootloaded.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] snugroho3:
What is the main website? I tried with www.zuk.com but it is the same registration form (need verification code via sms, which I never receive).

Please someone tell me how to register to that da*m site...
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] miheilo:
It works for me. On the main site go to register in the top right corner and then you have two tabs one for phone and the other for email registration.

Try also this link: https://passport.zuk.com/wauthen3/w...lenovoid.thirdname=null&lenovoid.qrstate=null
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] snugroho3:
Thanks! The link is working. I can register :highfive:
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] xmidt:
No mater what I do I can't get the unlocked_bootloader file on my email account. Tried 4 different addresses already and nothing
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] eryen:
Does this procedure wipe userdata and internal sdcard.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] Nordlord:
Yes it does
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] flashkobalt:
Hi there,

I'm stuck trying to unlock the bootloader for my Zuk Z2 (not pro) - I've received the unlock_bootloader.img via email and transferred it to the adb_fastboot directory. When I try and run the command to unlock the bootloader, I keep getting an error:

target reported max download size of 1610612736 bytes

sending 'unlock' (0 KB)...

OKAY [ 0.035s]

writing 'unlock'...

FAILED (remote: unlock failed)

finished. total time: 0.090s

I've tried with multiple stable stock roms, but I suspect the problem is that in the developer options, I cannot see an option "Enable OEM unlocking".

Can anyone help me unlock the bootloader?

Thanks
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] oldie51:
Hi all,

i am stuck with fastboot. I reboot into fastboot with "adb reboot bootloader", but then "fastboot devices" does not show any device. "fastboot --version" results in "fastboot version fd9e4d07b0f5-android". Is this the problem? Do i need an other version?

Greetings from Vienna,

Georg
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] lazydesi:
try this guide mate

http://zukfans.eu/community/threads/zuk-z2-bootloader-unlock.62/

command should be adb devices. initially it wont show, because it does have id, you need to provide id. follow the above guide.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] oldie51:
Thanks for your fast response, but i don't have a problem with adb. I followed the unlock instructions above, adb works fine ("adb devices" returns my S/N and "adb reboot bootloader" boots into bootloader). But then "fastboot devices" doesn't show anything and "fastboot -i 0x2b4c flash unlock unlock_bootloader.img" just answers "< waiting for device >". To sum it up, the Z2 (unmodiefied out of the box) does not respond to fastboot commands, even though the connection (drivers, debug mode, etc.) works fine.

Georg
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] lazydesi:
adb devices

adb reboot bootloader

fastboot -i 0x2b4c

fastboot -i 0x2b4c flash unlock unlock_bootloader.img

fastboot -i 0x2b4c oem unlock-go if this doesnt work try ------fastboot oem unlock 0x2b4c -i-go

fastboot reboot.

Copy the files unlock_bootloader.img in adb directory

---------- Post added at 06:08 PM ---------- Previous post was at 06:07 PM ----------

if the above steps doesnt work, try changing different ports.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] oldie51:
OK, i did:

adb devices

the answer is my S/N and the text "device"

adb reboot bootloader

the device boots into bootloader

fastboot -i 0x2b4c

the answer is: "usage: fastboot [ <option> ] <command>" and below many lines with the adb help, in the help it shows the -i flag.

fastboot -i 0x2b4c flash unlock unlock_bootloader.img

< waiting for device > This is the end, it stays in this mode forever (well, not forever, after an hour i killed it).

I tried three different USB ports (2 and 3) and of course the file unlock_bootloader.img is in the adb directory. I also tried it using the adb provided in the adb-setup-1.4.3.exe, which is linked in the instructions, and also the adb provided in the android SDK r24.4.1. I have used adb/fastboot in the past with different devices, but this Z2 is the first time i am stuck.

Georg
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] lazydesi:
can you uninstall the drivers and reinstall them?

try to run windows in test mode also.

---------- Post added at 12:27 PM ---------- Previous post was at 12:22 PM ----------

by the way, which windows version are you using?
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] oldie51:
I am on Windows 10, latest update. Tomorrow i will have access to a windows 7, whic never had any mobile devices attached. Will see...
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] lazydesi:
some people experienced drivers issue with w10. (Driver Signature Enforcement )
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] oldie51:
Bingo! I found a Windows 7 PC and all went flawlessly. I am now on "MK60.1-z2pro-201610041602-NIGHTLY.zip".

Thanks to all who had helped,

Georg
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] lazydesi:
thats sounds good.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] sanke1:
I think it correctly belongs to this topic of bootloaders

fastboot -i 0x2b4c oem device-info

D:\DriversApps\Zuk Z2 Plus\Minimal ADB and Fastboot>fastboot -i 0x2b4c oem device-info
...
(bootloader) Device tampered: false
(bootloader) Device unlocked: false
(bootloader) Device relocked: true
(bootloader) Device critical unlocked: false
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
OKAY [ 0.063s]
finished. total time: 0.064s

Why has Lenovo/Zuk added extra item Device relocked: true ?

Is there a way to clear out that flag? Is it possible to change the Device relocked: false?

The OTA updater is detecting root because of this. Very annoying policy. This phone is getting on my nerves.
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] syedtahir16:
This makes so much sense now. I went back to stock relocked the bootloader and I thought I was all set to receive OTA, but it kept saying that I'm rooted. I just could not understand why it would say I'm rooted when I'm actually not. It would be great to turn this flag off
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] roobert74:
HI

How can i take Lenovo ZUI icons ZUK Z2,can help someone?
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] t-mobile_mda:
hey..

anyone faced same pb..?

C:\fastboot_adb(1.0.32)_071114_r21>fastboot -i 0x2b4c flash unlock unlock_bootloader.img

target reported max download size of 1610612736 bytes

sending 'unlock' (0 KB)...

OKAY [ 0.031s]

writing 'unlock'...

FAILED (remote: unlock failed)

finished. total time: 0.063s
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] luytent:
Yes, I got the same problem. I stopped looking for a solution :/
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] kiruba_jkl:
Put Right Serial # on Zuk developer site & get unlock_bootloader.img
[Lenovo ZUK Z2 (Plus) Guides, News, & Discussion] bluexp:
Does anybody know the difference betwwen "fastboot -i 0x2b4c oem unlock-go" and "fastboot -i 0x2b4c oem unlock"?

What would that "-go" do?