How to unlock Bootloader of Huawei Honor 3C (H30-U10)

Warning:
* Below steps are ONLY applicable to Honor 3C (H30-U10) that comes with locked bootloader.
* If you unlock the bootloader, you may void the warranty of your device.

1) Open SP FlashTool, click [Scatter-loading] and browse to 'Honor3C' project dir, then select folder 'Unlock' and click 'Open'.

2) Select 'MT6582_Android_scatter.txt' found in 'Unlock' folder and click 'Open'.

3) The partitions info should be loaded as shown below.

4) Enable 'Write Memory' under [Window] drop down menu.

5) Switch to 'Write Memory' tab and click [Open raw data] button.

6) Browse to 'Honor3C' project dir and select folder 'Unlock' and click 'Open'.

7) Select 'preloader_huawei82_wet_jb5.bin' inside 'Unlock' folder and click 'Open'.

8) Now change Memory Setting to 'EMMC', Begin Address to '0x800' and Container Length to '0x1B0EC' as shown below.

9) Double check everything is correct and press 'Write Memory' button.

10) SP FlashTool is waiting for connection, now connect your phone to computer using USB cable, WITHOUTthe battery inserted.

11) SPFT has successfully established a connection with the phone, the writing process will begin.

12) The following GREEN circle will be displayed if the writing succeeded.

13) Now DISCONNECT the USB cable from your phone.
14) Return to 'Download' tab and press [Download] button or 'F9' on keyboard.

15) You will receive a warning message that not all images are loaded, click 'Yes' to continue.

16) SP FlashTool is waiting for connection, now connect your phone to computer using USB cable, WITHOUTthe battery inserted.
17) SPFT has successfully established a connection with the phone, the writing process will begin.

18) The following GREEN circle will be displayed if the download succeeded.

19) Now DISCONNECT the USB cable from your phone.

20) Your phone should be unlocked now, you may re-insert battery to boot normally or continue flashing recovery/ROM.