Thursday, January 15, 2015

Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0 - Custom recovery have may useful function that can be used by android user to optimize his devices, the main use of custom recovery is we can make full backup of our current running ROM and we can install unsign custom ROM to our devices.
Today i will write guide how to installing custom recovery on Lenovo A850, this guide is using flash tool method and using windows computer to run it. The advantage using flash tool is you don't need to root your device first when you wanna to install custom recovery. But using flash tool is more difficult and has possibility to brick your device, so please consider it before following this guide.

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

Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

Requirements :
  • Can be use for both china and international firmware version, but sometime can result error on the newest international firmware version 
  • Backup your data first, and prepare ROM files in case you got brick when following this guide, brick can only be fix with re flashing.
  • The file in this guide can also be use for MobileUncle method, but you need to root your device first fo using MobileUncle
Downloads :
  • ROW_TWRP_CWM_recovery contain cwm and twrp file for international firmware version, also contains android scatter file that can be use for flash tool.
  • CN_TWRP_CWM_recovery ↦ contain cwm and twrp file for china firmware version, also contains android scatter file that can be use for flash tool.
  • USB VCOM Driver Install this driver first on your computer, Turn off your device and remove the battery, using USB cable connect your device while look at My Computer ↦ Manage ↦ Device Manager there will be MTK65xx Preloader Devices show up for 5 second than disappeared, before disappeared right click on it and select Update Driver Software point it to USB VCOM Driver extracted folder. When it finish disconnect and connect again there will be Mediatek PreLoader USB VCOM Port on your device manager.
    Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

  • SP Flash Tool v3.1320 flash tool need to flashing or install firmware to your device, recommended to use only this version tool.
Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0
  1. Download all files on the download section, this guide is using flash tool method and using windows computer so you must make sure that USB VCOM driver is installed properly before start following this guide.
  2. Extract recovery to your computer, you will got recovert_TWRP_2.5.0.0.img and recovery_z_CWM_6.0.3.4.img. Rename the file that you wanna use to recovery.img.
  3. Extract the flash tool, and run flash_tool.exe if you are using windows 7 or later please run it using administrator privilege to avoid any permission error.
  4. On the flash tool, please check DA DL All with Checksum option and then click on Scatter-Loading button. Browse it to recovery extracted folder and the select MT6582_Android_scatter.txt, this action will load recovery.img to the flash tool 
    Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

  5. When everything is set up, now just press Download button, it will trigger warning information that tell not all images loaded correctly, just confirm by press Yes button.
    Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

  6. Now turn off your device and remove battery, wait for 5-10 second then connect your device to computer. Flash tool will immediately recognize your device and begin to start flashing process, the process will take 5-10 second to finish. And when you see GREEN CIRCLE on the middle of flash tool that mean flashing process already finish successful.
    Lenovo A850, How to Installing Custom Recovery CWM v6.0.3.4 and TWRP v2.5.0.0

  7. Done, now you can disconnect your device and try to turn it on. First try to normal boot to see that your device not bootloop or brick, or you can straight to press and hold Power Button + Volume Up + Volume Down button to go to recovery mode.
Finish, and congratulations you have successful modified your device by installing custom recovery on your Lenovo A850. Please leave any comments if you found any broken links or problems regarding this guide. Thank You

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18 comments:

  1. +andy_suwito aku punya lenovo a850i dan ianya AP set(firmware cina). tempoh hari hp aku tidak bisa di on dan aku hantar di kedai utk diflash rom baru. hasilnya, dari awalnya lenovo aku model numbernya adalah a850i kini menjadi a850. apa ini sudah di firmware international? soalnya hp ini masih punya cina lagi bila di connect pada pc dan install pc suitenya.

    jadi, apa mungkin bisa menukar firmware cina kepada international?

    kedua, hp a850i aku (kini ianya di tulis a850) sudah rooted dari sejak mula beli lagi. dan masa di flash rom baru rootednya hilang. jadi aku mencuba nasib dengan menggunakan framaroot. hasilnya hp nih bisa lagi punya superusernya.. tapi kekurangannya, hp ini tidak punya recovery bootnya. jadi aku ketemu kamu punya tutorial ini, dan pada hemat kamu, apa aku bisa mengikut tutorial ini?

    terimakasih



    ReplyDelete
    Replies
    1. A850i and A850 is different device, before flashing please give me info about your device, software version, build number, baseband version. because lenovo have 2 different software international and china, international firmawre can be know with ROW on build number. usually A850i is a fake device for original Lenovo A850 of course with different hardware but if you sure it A850 then you safe for flash this recovery, but first give me your build number and baseband number

      Delete
    2. +andy suwito thanks andy added me back. okay. my lenovo i have already know at the first time i bought it is the a850i version (ap set or clone maybe).. then now, when my phone stuck on boot can not on, i sent my phone to repair. so, i knew them flash new rom on this phone.

      then, this is my new phone version info:

      model number - lenovo a850
      android version - 4.2.2
      baseband version - a850.v13, 2013/09/06 17:49
      build number - a850_s203_www.sjrom.cn

      thanks andy.

      Delete
    3. from your above story, i would not recommend you to flash the recovery, but looking from your build number, it china firmware that already modified add language and add google play store so you need to find china recovery too.
      you can try this CN_TWRP_CWM_recovery ↦ contain cwm and twrp file for china firmware version, also contains android scatter file that can be use for flash tool. but every modified has risk to brick your device

      Delete
    4. thanks andy for some tips. i will inform you later. i am gonna be flashing cwm recovery with mobile uncle tool.

      Delete
    5. ok will waiting for your information,
      thank you for visit

      Delete
    6. hi andy.. i had tried many times to flash the recovery either cwm or twrp cn version with mobileuncle tool but it just stuck on lenovo logo then a few seconds later its just off the phone. hold the power button to switch back on.. nothing happen.. i try to into the bootloader but its nothing there, black and blank then stuck again until the phone shutdown itself. thats it.

      my phone still okay. but i just want to know if any idea to make it happen.. huhu whatever, thanks for your times. :)

      Delete
    7. Than the recovery not for your device, you should search the one that suit with your device. Or you can change the rom to international version, but it risky

      Delete
  2. hello i had the same hp
    model number - lenovo a850
    android version - 4.2.2
    baseband version - a850.v13, 2013/09/06 17:49
    build number - a850_s203_www.sjrom.cn
    and it got into software problem and then some how i find the proper firmware the hp and flashed it. but now the phone is back to its china version without gapps..please help me to how to install it..
    thank you

    ReplyDelete
    Replies
    1. Please look at this guide http://bit.ly/1z95Pic

      Delete
  3. hey andy ,instate of changing the ROM do you know how to update lenovo a850 from jellybean(4.2.2) to kitkat or lollipop

    ReplyDelete
    Replies
    1. Lenovo A850 dont have kitkat or lollipop the latest is S128, you see it at here http://bit.ly/1z95Pic, how to update it.

      Delete
  4. http://bit.ly/1z95Pic
    Hello, as u mentioned the above link. Can i apply this ROW on Model Lenovo A889 ? Plz

    ReplyDelete
    Replies
    1. No you cannot, each device have it own firmware and it own custom recovery, so you cannot flash row firmware A850 to A889, it will only brick your device

      Delete
  5. Thanks Andy. Just following you tutorial now, got interesting. I have an a850, I softbricked it trying to install lollipop custom rom. I got it back though, flashing an A850i rom. But I'm still interested in flashing lollipop rom on it. I'm having problem finding the right custom recovery as I've flashed many but not working.

    ReplyDelete
    Replies
    1. thank you for leaving comments, I think as custom recovery is have same function so just pick one and get install your custom ROM. hard find lollipop custom ROM for Lenovo device lack of bug

      Delete
  6. Thank Andy..my phone lenovo a850 can't flash twrp,
    Baseband version
    A850 ROW V20
    Build Number
    A850_AMX_ROW_B141_141008

    ReplyDelete
    Replies
    1. i think above guuide is not for custom rom, AMX if custom rom right?
      above guide is for china or international ROM.

      Delete