Lenovo K910 4G LTE, How to Root and Unlock Fastboot for Android 4.4

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Lenovo K910 4G LTE, How to Root and Unlock Fastboot for Android 4.4 – I took this guide on the russian forum, this is how you can root Lenovo K910. This guide is for Lenovo K910 4G LTE with only 1 SIM that only can bought outside china country so if you Lenovo K910 using 2 SIM please don’t attempt to follow this guide.
This guide is will root Lenovo K910, and will make Lenovo K910 lose it warranty. This guide is also has possibility to brick your device so please very consider it before attempt to follow.
Before starting following this guide better to make backup your applications and data on your device because it will erase all your data and applications.

Disclaimer :
This guide for educational purpose only, We not responsible if your device bricked after following this tutorial (DWYOR)

Lenovo K910 4G LTE, How to Root and Unlock Fastboot for Android 4.4

Requirements :

Downloads :
Lenovo K910 4G LTE, How to Root and Unlock Fastboot for Android 4.4
  1. Download all the files required above. First thing to do is we need to install S129 first to your device, follow below guide to install it in Lenovo K910

    • make folder sdfuse on root your internal memory
    • extract K910L_S129_140202 on your computer, you will find .qsb file. Move this .qsb file to sdfuse on your internal memory. Make sure that only one file qsb in sdfuse folder.
    • turn off your device, turn on Lenovo K910 while holding Power button + Volume Down button, it will bring you to recovery mode.
    • in the menu, select Update sd. On the recovery you can use Volume Up and Volume Down for navigate and Power button to enter the menu.
    • wait until installation finish and reboot your device.
  2. Installing custom recovery TWRP v2.7.1.1, Copy update_S214_unlock and Update_SuperSu_v2.00 to your internal memory root, don’t place it inside the folder.
  3. Extract TWRP_v2.7.1.2_K910 on your computer. for example on the c:K910, using command prompt navigate it to extracted folder
    Lenovo K910 4G LTE, How to Root and Unlock Fastboot for Android 4.4
  4. Connect your device on the computer and the run  0_run_twrp_recovery_K910L.bat from inside TWRP extracted folder, wait the process until finish. This will installed custom recovery TWRP v2.7.1.1 on Lenovo K910.
  5. Disconnect your device, Turn off and turn on again while holding Volume Down + Power button, this will bring you to recovery mode. 
  6. Install Update_SuperSu_v2.00 and update_S214_unlock from recovery mode.
  7. Done.
The guide is very long, if you confuse you can contact me or leave any comments and i will try to help you. This guide will install custom recovery TWRP first after that you can root or update to S214 from custom recovery installation menu. Leave comments if you got any problem or broken links regarding this guide. Thank You
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Khương Huỳnh
5 years ago

Current version my phone's K910L_S219_141211. Can I root by your guide?
Thank you! 🙂

androidrookies
5 years ago

Hi,
My guide is for K910 with 1SIM, so if your device is 1SIM you can follow this guide

Ishtiyaq
5 years ago

Hi Andy,

I have downloaded all the files, created a folder on Internal Storage of "sdfuse" and copied the qsb file. But, when boot the phone in recovery mode, I dont see "update sd" option.

Please help.

My phone details:
Lenovo K910L
Software Version: K910L_S219_141211
Andoid Version: 4.4.2

androidrookies
5 years ago

Hi,
Maybe you already change the recovery into custom, uodate sd only available on stock recovery. Could you tell me what menus on your recovery?

Ishtiyaq
5 years ago

Thanks for your quick response. Much appreciated.
I get the following options in recovery:
– reboot system now
– apply update from ADB
– wipe data/factory reset
– wipe cache partition
– apply update from internal storage (if I choose this in sdfuse folder qsb file is not shown)
– apply update from cache.

Many thanks in advance.

androidrookies
5 years ago

I think your recovery already update to custom recovery, or maybe your device is not 4G Lte but dual SIM Wcdma because the original 4G LTE have sdupdate on recovery

Ishtiyaq
5 years ago

It is single sim removable and not 4G LTE, I purchased in United Arab Emirates.

No worries, once again many thanks.

androidrookies
5 years ago
Reply to  Ishtiyaq

Ah okey, so sorry i cannot help you solve the problem

Yoga
5 years ago

working for me. Thanks gan

androidrookies
5 years ago
Reply to  Yoga

Thank you for positive comment and visit

Amer Khalaf
5 years ago

Just i want to ask if arabic language avalible in this rom

androidrookies
5 years ago
Reply to  Amer Khalaf

Hi,
I think it available but for sure i dont know. This rom contains more than 70 languages

Khương Huỳnh
5 years ago

How to unlockbootloader this device? 🙁

androidrookies
5 years ago

i don't have the guide bt you can see how to do it on this guide http://forum.xda-developers.com/android/development/lenovo-k910-bootloader-unlock-t2930904

Azhar Sayeed
5 years ago

Hey Andy !!!
First off stellar work bro ………..really appreciate ur efforts. I really want to try ur method out coz so many of the others i have tried have failed, but feels like there is light at the end of the tunnel with ur method!!! My only issue is —i cant download any of the files through the links u provided …maybe coz the links are broken so i checked google by the same file name …there are no alternative download sources. Any help will be great !!!
Thanks in advance !!!! Keep up the work !!!!

androidrookies
5 years ago
Reply to  Azhar Sayeed

Hi,
First thank you for visit and second i will soon check the link and if it broken i will as soon as possible replace the link

Yanzend
5 years ago

Mas Andy, success for me rooting and flash latest fw for my K910L, thank you verymuch, and now in KK how to update this twrp v 2.7.1.2. to twrp v 2.8.6.3 thank you

androidrookies
5 years ago
Reply to  Yanzend

Hi,
I think i don't have twrp v2.8.6 guide yet. Keep visit , i will soon write it

Niq Naqiuddin
5 years ago

why when i tried to run trwp its failed?

androidrookies
5 years ago
Reply to  Niq Naqiuddin

Can you give me more clue, not just failed. Give meore description so i can understand your problem

Alexander Alphonso
5 years ago

For Step 2 of your guide, do I have to unzip the two files first before copying them to the phone?

androidrookies
5 years ago

Hi,
No need to unzip it. Installing via custom recovery will need zip file

gilbert lucas
5 years ago

Hi installed custom rom on k910L, but google apps are close once you opened it so i tried reinstalling, i accidentally wiped the os,
now im stock in lenovo logo, i tried pressing volume up + down + power button, then teamwin is displaying but thats all i can see, it keeps on blinking.
i tried to run 0_run_twrp_recovery_K910L.bat while my phone is connected to pc(note my phone is in recovery mode with the teamwin banner), it displays the serial, but thats all it didnt finished.

androidrookies
5 years ago
Reply to  gilbert lucas

hi,
to fix the bootloop is try to re flashing your device with the new firmware, you can follow this guide http://bit.ly/1mHV4Yg. but always remember that re flashing has risk so do with your own risk, i am only suggesting what must to do.

goh choon wei
5 years ago

my phone had been bricked!Any tutorial to unbrick it back to normally?

androidrookies
5 years ago
Reply to  goh choon wei

hi, if you device still recognize by the computer then try to install new firmware to your device using this guide http://bit.ly/1mHV4Yg but if computer cannot see your device than bring your device to lenovo service center.

goh choon wei
5 years ago
Reply to  goh choon wei

my phone keep rebooting… it cant boot into recovery menu interface

androidrookies
5 years ago
Reply to  goh choon wei

same as my answer above,
but if you afraid then dont do anything just bring your device to Lenovo service center then will fix for you.

goh choon wei
5 years ago
Reply to  goh choon wei

i'm tryying(downloading those stuff).anyway does rooting require phone that had unlocked bootloader?

androidrookies
5 years ago
Reply to  goh choon wei

all modification need or require unlocking bootloader, will fail if you device still have lock bootloader.

goh choon wei
5 years ago
Reply to  goh choon wei

i downloaded the file,so now using fastboot to update?(i only can use fastboot now)IF yes,it need a text document called "android-info.txt",how can i get that?

androidrookies
5 years ago
Reply to  goh choon wei

What you gone to do? It for rooting and unlock bootloader and no need android-info.txt
Just follow the above step, and there isno fastboot modeneeded

goh choon wei
5 years ago
Reply to  goh choon wei

Unbricked phone… any solution?

androidrookies
5 years ago
Reply to  goh choon wei

If. Your device still recognize by computer try using this guide http://bit.ly/1mHV4Yg, but if computer cannot detect then sorry i cannot help

goh choon wei
5 years ago
Reply to  goh choon wei

i success unbricked it by using otg cable flash the 214 version of firmware you given.hooray~~~!A question that had brothers me since i bricked my phone>>>should root the phone 1st or unlock the bootloader goes 1st…?

androidrookies
5 years ago
Reply to  goh choon wei

The first must be unlock bootloader, after that you can root, install cwm and etc.

Jolo Hardcore
4 years ago
Reply to  goh choon wei

How do you unbricked via OTG sir? I've got bootloop only recovery can acces volume up+down+power can access. Somebody help?

androidrookies
4 years ago
Reply to  goh choon wei

It is custom recovery or stock if custom just find rom in zip then install it via recobery

Kaiser
5 years ago

Hi can you explain more on step 3. I ran the bat file but device was not found

androidrookies
5 years ago
Reply to  Kaiser

Are you already read how to enable debugging for Lenovo K910? Computer will not detect your device if driver not install and debugging not enable from your device

Kaiser
5 years ago
Reply to  Kaiser

Issue solved. I run another lenovo usb driver and its ok now. The bat file can find the phone

androidrookies
5 years ago
Reply to  Kaiser

Good job, congratulations glad to hear that. Sorry cannot reply previous comment

masamo
4 years ago

Can i update after i flash the stock rom.

androidrookies
4 years ago
Reply to  masamo

Yes but your current ROM must be unlocked first, then just follow above guide. Step by step until you can successful root your device. Above guide has risk that must be consider first

Abdul Muiz
4 years ago

How can't I boot into twrp again after I finish all this step because I want to change rom to cm12.1

androidrookies
4 years ago
Reply to  Abdul Muiz

Seethe step number 5 if you want to boot to recovery mode

sarip saeful
4 years ago

boss ane udah ikutin petunjuk diatas pas udah update sdcard malah ngk bisa booting cm retart bolak balik
solusinya gan,,, soalnya masuk recovery jg ngak bisa

androidrookies
4 years ago
Reply to  sarip saeful

give device specification, 1 sim or 2 sim.
try reflash with your original firmware, or try the step 1 again, then go to recovery do factory reset.

sarip saeful
4 years ago

mine is 1 sim
usb not detection cause just restart i can't reflash

androidrookies
4 years ago
Reply to  sarip saeful

Try turn off your device and try to reflash. When you turn off device and connect to pc it will detect. If you can just try to go to recovery mode

june Ramos
4 years ago

hi, can you pls help me,i just bought a lenovo k910L and updated via OTA, but the update got error so my phone stuck at stock recovery, now i learned that i can flash the stock firmware via adb sideload, i have managed to go through the adb sideload process but during flash the recovery says "wrong footer" and "signature verification failed". what am i doing wrong here? this is the firmware i was trying to flash = https://docs.google.com/uc?export=download&confirm=FN1g&id=0B2VnoLGhgW7UczRlQV9XQ1YtQW8

androidrookies
4 years ago
Reply to  june Ramos

try re download the ROM, it might be corrupt or something. but you must ask the uploader for this issue i think.
look at this http://bit.ly/1zNNjLT

june Ramos
4 years ago

hi sir, i already downloaded 8 times and cant find other roms, maybe you can help me if you other rom or the stock rom you have thank you

androidrookies
4 years ago
Reply to  june Ramos

sorry i dont have another ROM, then maybe you can ask the uploader why you cannot flash the downloaded ROM, i already give you the link for my ROM.

Andrzej Wygoda
4 years ago

Hi, thank you for your guide.
I do not understand one thing:
Step 1: you are flashing K910L_S129_140202.
Step 4: you run TWRP.
If you can run TWRP in this step, it means that the bootloader is unlocked already.
So, why you are installing update_S214_unlock? What is it for?
Yes, I've read: update_S214_unlock ↦ 1.19 Gb, this is update ROM to the latest version for Lenovo K910, and already been unlock fastboot so you can root the phone through this ROM.
But you have TWRP BEFORE installing update_S214_unlock.
Help me understand, please.
Best Regards

androidrookies
4 years ago
Reply to  Andrzej Wygoda

If you want to keep S129 that no need to do the last step, it update the ROM to S214 and it unlock. Remeber once you unlock the bootloader you will not able to update OTA or recieved an update.

Andrzej Wygoda
4 years ago
Reply to  Andrzej Wygoda

Thank you very much! I understand 🙂

androidrookies
4 years ago
Reply to  Andrzej Wygoda

Your welcome, thank you for visit and leave comments

Joana Margaretha
4 years ago

my device not found when I running 0_run_twrp_recovery_K910L.
could you give me sugggestions pls? thanks

androidrookies
4 years ago

then check the driver is it installed correctly

KING TAKER
4 years ago

sorry bro,
i have lenovo vibe z k910L (singe sim)..

can i upgrade my rom to cynogenmod 12.1
can u show me the guide

androidrookies
4 years ago
Reply to  KING TAKER

if CM12.1 available for download then you can.
usually CM install with zip, so just root, install custom recovery than install cm from custom recovery.