(2013-07-11, 04:46)Gizbeat Wrote: Try the PDAnet ADB driver in the MTK Tools sub-forum.

(2013-06-11, 02:57)rey69 Wrote: 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!