[Xiaomi Redmi 3s Themes, Apps, and Mods] fxsheep:
Maybe we all faced xiaomi bootloader unlocking problems sometimes.We tried many ways to unlock it but failed. Or maybe we have a second-hand Redmi 3S with account locked.Then,there is a brand new way to unlock it.

If you can unlock your phone ,DONT try this method

Instead of using miflashunlock tool,we'll try to crack the aboot (emmc_appsboot.mbn) partition on our phone. But we don't have permission to write any system partition without unlocking.So we need to get the permission first.

The easiest way to get it is to boot your phone into Qualcomm 9008 EDL mode.This mode is integrated into the SoC so we always will be able to enter it.BUT Xiaomi has taken some actions to block it:crying:.So we do need to have a try.

The first and easiest way to enter 9008 is to reboot your phone into fastboot ,then type 'fastboot oem edl'. If this way doesn't work ,try the second way.

Second way:A 'Xiaomi Deep Flash Cable' is needed.You could buy it or diy it.(If you want to diy,just cut open a microusb cable,the you see four wires.Cut open the green one and the black one .Then screw together the four copper wire.)

Fully shut your phone down and use the cable to connect phone&PC.Nothing seemed to happen,but now your phone is under 9008. Then use a normal cable to connect.You will hear the computer installing a new device.

Third way: (Not recommended) Open the back of the phone ,tear the shell on the main circuit board down.Then you will see two copper points . Use a wire or tweezer to connect them. Then hold on,use your second hand to connect a USB cable(normal,not deep flash cable).

After booting into 9008 mode,you need to install the drivers of 9008 . Install this miflash .

https://drive.google.com/uc?id=0Byw7MVzb0VBXUnhFcmZmdWFaQkU&export=download

Open miflash and you will see a com port (it's your device).If not check device manager .Install the drivers properly.

Then, everything is ready.:)

Download and extract the package below.

https://drive.google.com/uc?id=0Byw7MVzb0VBXZUctUFYzb1BrSGM&export=download

An 'unlock' folder will be created and the unlocked version of bootloader is placed in. Then choose the folder in miflash. Click the flash button.It will be done in a few seconds.After it displayed 'Success',hold phone's power button for 15sec until it reboot. Maybe your device will stuck at logo.But don't worry. Just hold power and volume- together for 15sec until it enters fastboot.

Then the most amazing thing will happen!

Type 'fastboot oem unlock' on the computer .

Then you will see a UNLOCKING warning on the phone screen,it looks like Nexus's.Use your volume key and choose Yes. Phone reboots, stuck at logo again. But now everything is done. Just re enter fastboot and flash a custom recovery.

(Because the unlocking will wipe data using recovery, I have made an action in the 9008 flash package to erase the recovery partition to prevent losing data.)

After all, your phone has fully unlocked.So doing anything is easy.

BUT one con.You can't upgrade bootloader. But any firmware partition update will update it. So when you are flashing any zip file,you need to delete firmware-update/emmc_appsboot.mbn in the zip first. You can't use MIUI OTA.