[Tutorial] How to build CWM and root Bedove X21 (MTK6577) and other MTK phones

[rey69]

Hello everybody,

after some weeks trying to root my Bedove X21 phone by using every method published in this forum and other, I have learned soe things and specially why I got problems and how to face them. I finally rooted my phone and I would like to share this experience with you. For experienced users I will include a summary of steps here, and for those doing this for first time or wanting more information I recommend to read the attached detailed tutorial.

Summary:

1. Ensure you have the correct USB drivers
- Remove old drivers from previous android devices using usbdeview tool
- install MT6577 USB VCOM drivers [Admin: Anyone having issues with proper driver install can try PDA VCOM Drivers. See the stickies]
- Mediatek Preloader USB VCOM Port must be shown for some seconds in Device Manager when switched OFF phone is plugged-in. If it is not shown, then you must solve this before going ahead.

2. Create scatter file with MTKDroidTools (version used 2.4.6)

3. Extract ROM from phone using SP Flash Tool (version used 3.1304.0.119)
- Switch OFF phone
- Open Sp Flash Tool
- Load Scatter file
- Add ROM file to save in Read Back tab
- Set start block (0x00000000) and size (use CACHE start address from scatter file)
- click Read Back to start process
- plug in switched OFF phone to USB, extraction process will start
- if successful, a green circle will be shown and a big file with your ROM (just part of it) will be saved in your disk

4. Extract partitions from ROM file and patch them with MKTDroidTools
- switch on phone and start MTKDroidTools
- Select tab “root, backup, recovery” and click “ To process file ROM_from Flash Tool”
- select ROM file saved in step 3
- click YES when asked if you want to mke CWm recovery automatically
- wait until process is finished. A folder named "backup" should have been created under MTKdroidTool folder, and under most recent subfolder some files with images of ROM partitions + scatter file (patched _PMT.txt or only .txt) + patched boot image + patched recovery image.

5. Flash patched recovery and boot using Sp Flash Tool.
- Copy patched scatter file (original-scatter-filename_PMT.txt) + patched boot and recovery files to an empty folder. If there is no _PMT.txt file, copy the existing scatter file (.txt, same as original created in second step). Rename patched boot and recovery files to boot.img and recovery.img
- switch OFF phone and unplug it from USB
- run SP Flash Tool
- load scatter file (_PMT.txt or .txt if _PMT was not created in step 4) and check only BOOTIMG and RECOVERY are selected [Admin: This is rey69's tutorial, however I must amend it to say that most phones SHOULDN'T have to flash patched_boot.img as well. First time around, please just try flashing patched_recovery.img and leave your boot.img alone.]
- click Download
- plugin switched OFF phone to USB. Flash process should start
- if successful, a green circle will be shown

6. Root your phone with MTKDroidTool
- unplug phone
- open MTLDroidTool and go to "root, backup, recovery” tab
- boot phone to recovery mode (vol-up + power)
- plugin to USB
- option "SuperUser" should become available as soon as phone is recognized
- click SuperUser
- done


And that's all. For more details please follow the detailed pdf tutorial. It is obvious to say that these steps worked for me, it is not guaranteed that will work for you.

Good luck!

So,
I did a great shit in my device, it's a bedove x21, in a stupid moment i changed the file wlan.ko of my device, now my wifi connection don't work, in fact, the device can't connect or find any wirelles network. Tragic!!! Can you help me with my problem? I think which replacing the wrong file from the original file the things will work.

Unfortunately I cannot send you such file as I don't have this phone anymore. I suppose you don't have a backup...

[mrrip]

Thanks for the nice guide to root my x21.
I failed on three computers with win7 64 but then tried a win7 32 that worked, had problems with the usb drivers.
Thanks again for the great guide
Sincerely Anders

[jorfde]

Hi, I make the scatter file with no problem but when i execute Flash Tool with the phone switched off it doesn't detect the phone and a message from Windows is already shown "New hardware found MT65xx Preloader" but although I've already installed the drivers and root the phone there's no way to the pc detects it. I use Windows XP SP3.

Regards

[rey69]

Hi, I make the scatter file with no problem but when i execute Flash Tool with the phone switched off it doesn't detect the phone and a message from Windows is already shown "New hardware found MT65xx Preloader" but although I've already installed the drivers and root the phone there's no way to the pc detects it. I use Windows XP SP3.

Regards

Hi
First of all, after installing the drivers you must reboot your computer. Your phone must be switched off and unplugged from usb.
Second step is to open device manager and leave it open showing devices under "Ports (COM & LPT)". Then plug-in to usb the switched off phone and you should see Preloader device shown for some seconds in evice manager. If it is not shown then you must follow procedure described in my tutorial to remove previous installed android drivers and reinstall.

[julspower]

Hi
I just done this on my neken N6
worked like instructed no pitfall
I haven't flashed boot.img

to get the CWM boot menu where I could backup the complete image of my phone what I have to do?
im not having it, the boot menu is still in chinesse.

Thanks

[romy4321]

thanks for this awesome guide
i have made CWM, rooted my Lennovo S920
before i thought that failed to make CWM
in pressing 2 combos (power + volume), i always redirected to Factory Mode and showing Chinese character

what i did is use the MTK Droid Tool and connect/plug the phone after tool recognized the phone i use the ADB
at the lower right and use the command "adb reboot recovery" and phone reboot on CWM
thanksssssss

[t-bon3]

@rey69 Just joined the forum specially to say thanks for this fantastic guide.
I picked up a cheap MT8377 tablet in Thailand (True Beyond Tab 3G) and after failing to get root with any of the 1-click tools I came across your guide.

Followed the instructions to the letter, my only comment is that between step 3 and step 5 I had to close and re-open "SP Flash Tool". Without restarting SP, loading the updated PMT scatter was not successful, all of the address fields were stuck at 0x000000. Worked fine after closing and re-opening.

Apart from that I now have a fully rooted tablet with CWM, just how I like it!

Device info for anyone searching how to root this device.

Hardware : MT6577 (MT8377 is Fake!)
Model : TRUE BEYOND TAB 3G
Build number : HL9.TRUECORP.MUL.BAND15.0503.V3.12
Build date UTC : 20130503-070950
Android v : 4.1.1
Baseband v: MAUI.11AMD.W12.22.SP.V18, 2013/03/18 11:15
Kernel v : 3.4.0 (rd1-sw1-server3@rd1-sw1-server3-desktop) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #1 SMP Fri May 3 15:07:37 CST 2013

[devanirsilva]

hi
i have rooted my bedove x21 step by step and its goes smoothly.
thank you very much for your work

Hello, I have a bedove x21 with the original rom and would like to update to android 4.1 rom.
Could you tell me the direct link to the correct rom for this phone model (bedove x21 - MTK6577).

[Schize]

I'm trying to enable CWM on my Tianhe x920, but I'm forever stuck at part 3, where I read the ROM with the Flash Tool. Despite multiple clearings with usbdeview, countless reboots and reinstalls of the MTK6589 drivers via Gizbeat's PdaNET link, and several restarts into Windows 8's Unsigned USB Drivers mode, I am still unable to get Flash Tools to recognize the phone when turned off. The phone shows up briefly as MT65xx preloader under "other devices", and never changes to "vcom".

What can I do?

[apple2005]

Can I use this tutorial for my Neken N6? Off course I have to use different drivers.