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[ROOT][GUIDE][NOOB-FRIENDLY]Unlock Bootloader+Root+Stock Firmware for Lenovo K8 Plus

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By Dhruv_Agarwal, Senior Member on 11th November 2017, 04:46 PM
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How to unlock bootloader & get root for Lenovo K8 Plus

**********Pre-requirements***********

1. Make sure you have 70% charge or more then that.
2. Follow all steps correctly otherwise you will end up with a bricked phone.
3. I'm not responsible for any damage to your phone.
4. Make sure that you have installed usb drivers.
5. Download ADB & Fastboot Drivers

Steps to Unlock Bootloader

1. First of all, enable the Developer Option
To Enable the Developer Option, Go to your Settings -> About -> Software Information -> More -> Now Tap on the Build Number 7-8 Times until you see a toast message “Developer option enabled"

2. Go back to settings -> Now you need to enable the OEM Unlock by going to Settings -> Developer Option and Enable OEM Unlock and USB Debugging

3. Download and Extract the Downloaded ADB fastboot Zip file on your phone.

4. Now connect your phone to Computer using USB Cable.
When you connect your Phone to Computer, please wait until all the drivers get installed.

5. In your ADB fastboot folder open a command prompt window by pressing Shift Key + Right Mouse Click
Now type the command in your command window
Code:
adb devices
6. If you see a pop up to allow USB Debugging on your phone, Click OK
Now type the command below to reboot your phone to bootloader
Code:
adb reboot bootloader
7. Once your phone reboot into bootloader, make sure your phone shows the bootloader locked and then type the command below to make sure fastboot drivers are installed properly.
Code:
fastboot devices
8. This command will list the connected devices. If your phones serial number shows up you are good to go and may continue. If the phone is NOT listed this indicates that your drivers are not installed correctly. In order for you to continue, you must fix your drivers so that your phone is listed under fastboot devices.

9. If the phone has been recognized by the command above, proceed to unlock the bootloader with the following command:
Remember that this step will wipe EVERYTHING off the phone. Also you'll loose your warranty!!
Code:
fastboot oem unlock
10. After the above command has finished executing, run the following
Code:
fastboot reboot
The phone will reboot. Wait until the phone has fully booted up into Android.

Root method
Note:- All credits for it goes to @topjohnwu for his amazing magisk
Requirements:-
1. Make sure you are on latest September patch firmware.
2. Download patched_boot.img created from magisk mangaer.

Instructions:-

1. Connect up your phone then type:-
Code:
adb reboot bootloader
2. Copy patched_boot.img in adb folder.
Now type
Code:
fastboot flash boot patched_boot.img
3. Open up you device & install magisk manager from here

Voilla you're rooted.

Stock firmware - here

Now, I'm working on a working TWRP for our device so be patient.

If you want to make help in the development for our device join this telegram group

Credits:-
Dhruv Agarwal (me)
Jwalit Vyas (Orangelalo at telegram)
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12th November 2017, 09:41 AM |#2  
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Wow!!thanks for posting this 👍👍
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12th November 2017, 10:33 AM |#3  
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Great work, good for k8plus user, my brother was waiting for this, going to tell him,


Please add a tutorial on how to flash stock firmware if anything goes wrong,
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12th November 2017, 11:59 AM |#4  
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already shared by XN Logos twrp also available
12th November 2017, 02:04 PM |#5  
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Quote:
Originally Posted by himfa71

Great work, good for k8plus user, my brother was waiting for this, going to tell him,


Please add a tutorial on how to flash stock firmware if anything goes wrong,

Okay I'll post it soon.

Quote:
Originally Posted by mark332

already shared by XN Logos twrp also available

I have tried it but that was not working at least for me.
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21st November 2017, 11:23 AM |#6  
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Lenovo k8 plus xt1902-2 bootloader wont Unlock/Lock
I'm using Lenovo k8 plus xt1902-2. I Successfully unlocked my bootloader using command ''fastboot oem unlock'' and in fastboot mode it says Device Status: unlocked (see attachment) but when i try to flash TWRP i'm getting error

platform-tools>fastboot flash recovery r
ecovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (14280 KB)...
OKAY [ 0.428s]
writing 'recovery'...
FAILED (remote: not allowed in locked state)
finished. total time: 0.445s

Even worse when i use command ''fastboot getvar all'' to check my bootloader status it says

(bootloader) partition-typereloader: raw data

(bootloader) serialno: 0123456789ABCDEF

(bootloader) off-mode-charge: 1

(bootloader) warranty: yes

(bootloader) unlocked: no

(bootloader) efuse: yes

(bootloader) secure: yes

(bootloader) kernel: lk

(bootloader) product: MARINO

(bootloader) hwid: 0

(bootloader) version-preloader:

(bootloader) version: 0.5

all: Done!!
finished. total time: 0.896s

I even tried to flash Twrp using sp flash tool with no luck. It gives error STATUS_INSUFFICIENT_BUFFER (0xC0010007)
Then i tried to lock the bootloader just so that i can start the unlock procedure again, but it just doesn't lock. I tried to flash stock Rom thru Sp flash tool using each and every mode (download load only, firmware upgrade, format all + download) the boot loader just doesn't lock again.

Please help me with this as i really want to install TWRP and root my device . Thanks!
23rd January 2018, 10:25 AM |#7  
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Whilst flashing the stock firmware from the above link, it...
Gives me chip hw_code mismatch error
scatter: MT6757D
Device: MT6757
SP flash tool v5.1628_Win

And STATUS_INSUFFICIENT_BUFFER (0xC0010007) whilst using SP Flash Tool v5.1728_Win
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6th February 2018, 09:07 AM |#8  
Senior Member
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Quote:
Originally Posted by AbuUmayr

Whilst flashing the stock firmware from the above link, it...
Gives me chip hw_code mismatch error
scatter: MT6757D
Device: MT6757
SP flash tool v5.1628_Win

And STATUS_INSUFFICIENT_BUFFER (0xC0010007) whilst using SP Flash Tool v5.1728_Win

same here
12th February 2018, 10:57 AM |#9  
Dhruv_Agarwal's Avatar
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Quote:
Originally Posted by ocorner543

I'm using Lenovo k8 plus xt1902-2. I Successfully unlocked my bootloader using command ''fastboot oem unlock'' and in fastboot mode it says Device Status: unlocked (see attachment) but when i try to flash TWRP i'm getting error

platform-tools>fastboot flash recovery r
ecovery.img
target reported max download size of 536870912 bytes
sending 'recovery' (14280 KB)...
OKAY [ 0.428s]
writing 'recovery'...
FAILED (remote: not allowed in locked state)
finished. total time: 0.445s

Even worse when i use command ''fastboot getvar all'' to check my bootloader status it says

(bootloader) partition-typereloader: raw data

(bootloader) serialno: 0123456789ABCDEF

(bootloader) off-mode-charge: 1

(bootloader) warranty: yes

(bootloader) unlocked: no

(bootloader) efuse: yes

(bootloader) secure: yes

(bootloader) kernel: lk

(bootloader) product: MARINO

(bootloader) hwid: 0

(bootloader) version-preloader:

(bootloader) version: 0.5

all: Done!!
finished. total time: 0.896s

I even tried to flash Twrp using sp flash tool with no luck. It gives error STATUS_INSUFFICIENT_BUFFER (0xC0010007)
Then i tried to lock the bootloader just so that i can start the unlock procedure again, but it just doesn't lock. I tried to flash stock Rom thru Sp flash tool using each and every mode (download load only, firmware upgrade, format all + download) the boot loader just doesn't lock again.

Please help me with this as i really want to install TWRP and root my device . Thanks!

Please PM me at telegram I have the same username


Quote:
Originally Posted by AbuUmayr

Whilst flashing the stock firmware from the above link, it...
Gives me chip hw_code mismatch error
scatter: MT6757D
Device: MT6757
SP flash tool v5.1628_Win

And STATUS_INSUFFICIENT_BUFFER (0xC0010007) whilst using SP Flash Tool v5.1728_Win


Quote:
Originally Posted by mdhuma

same here

Use this version of SP flash tool
12th February 2018, 04:20 PM |#10  
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lenovo k8 plus stuck at logo and keep rebooting
hi friends today i factory reset my rooted phone lenovo k8 plus
but now its keep rebooting and not starting
pls help
21st February 2018, 06:21 AM |#11  
Member
Flag Handwara
Thanks Meter: 4
 
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Chip mismatch! Same error continues
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