[Xiaomi Redmi 3s Themes, Apps, and Mods] cristihan:
Unlock Redmi 3S without Xiaomi permission

Start Mode options for Redmi 3S:

- Fastboot mode: (Vol-) + (Power Button)

- Recovery mode: (Vol-) + (Vol+) + (Power Button)

Xiaomi Redmi 3S has the ability to enter the EDL (Emergency Download) mode through Fastboot blocked.

For this you need a special cable (DFC - short for Deep Flash Cable), which will force it (the phone) into download mode.

You can buy one from eBay or you can build one of your own. For last option you need the original Xiaomi

cable because all manufacturers sculpt the cable in their own way, have their own colors and designs...

In general, using the colors used by Xiaomi is the safest way.

For second option, do as follows:

- Cut the insulation of the cable along the wires with a blade or a sharp knife.

- Expose the wires at a distance of 4-5cm and gently clean the colored insulation from the black and green wires.

- I got the following : (Xiaomi cable.png)

- Solder a SMT/SMD Microswitch tactile push button or any micro switch with normally open contact as in attached photo

or search on youtube how to do it:(dfc-EN.jpg,SMT-SMD-Microswitch.jpg,dfc-2.jpg)

If you do not have a microswitch leave them so, insulated.

Stage 1.

- Disable Driver Signature Enforcement in Windows 7,8,10_64-Bit

(you can re-enable it after you finish with your phone if you want)

* Go to Start Menu and go to "All Programs", then "Accessories",

right click your mouse on "Command Prompt" and "Run as administrator".

* Run in Terminal:

bcdedit.exe -set loadoptions DDISABLE_INTEGRITY_CHECKS (followed by [ENTER]

bcdedit.exe -set TESTSIGNING ON (followed by [ENTER]

* Reboot your PC/Laptop

Now Signing Enforcement is disabled.

You will se on the lower right-hand corner of your Desktop "Test Mode and OS build".

- To Enable Driver Signature Enforcement do the same except last command that will be:

bcdedit.exe -set TESTSIGNING OFF (followed by [ENTER] and reboot PC.

Stage 2.

- Download the following files: https://mega.nz/#!3VdBlKzR!IhecYqJxGYEVlkum-MBOPq3F4XR9KcSUhUi9QGiLioY

- EDL mode drivers for Redmi 3S: QDLoader+HS-USB+Driver_32-64bit_Setup.zip

(choose your version 32 or 64 bit and install it)

- Fastboot drivers for Redmi 3S: minimal_adb_fastboot_1.4.3_portable.zip

(extract zip on your Desktop. After that you will have a folder "ADB" on Desktop)

- MI Flash tool (this version): MiFlash20170425.zip (install MiFlash on your PC)

- Unlocked version of bootloader for Redmi 3S: unlock-modified.zip (with xml file modified properly)

(extract zip on Desktop. After that you will have a folder "unlock-modified" on Desktop)

- Custom Recovery installer: RedMi3S_Fast__Unlock_edBL_specTWRP.zip

(extract zip on Desktop. A folder with the same name will appear on Desktop)

- ADB driver installer: ADBDriverInstaller.exe

(to install the right driver connect your phone to PC and run the executable)

Stage 3.

On your phone:

- Charge your phone battery to at least 70%

- Update MIUI to the lastest version (v10.2.2 it was mine)

- Go to “Settings” > “About device” and tap several times on MIUI version.

Developer options will be enabled.

- Go to “Developer options”. Enable USB Debugging and OEM-Unlock.

- Turn off the phone.

- Insert the DFC cable only into the phone. Not in your PC yet (do not turn ON your phone!)

On your PC: (assuming you installed all of the above files)

- Open "Device Manager" on your PC and leave it that way.

- Press and keep the Microswitch button of your DFC cable.

- (Or PRESS and KEEP the green and black cable with the exposed parts to each other.)

- Now insert the other end of the cable into the computer.

- With Microswitch button pressed WAIT for 5-6 seconds.

- The computer should signal that a new device has been detected and begin installing drivers for it.

- Under Ports(COM & LPT) “Qualcom HS-USB QDLoader 9008” driver should appear.(HS-USB Driver.jpg)

- Release the Microswitch button.

- (Or disconnect the black and green wires and make sure that they no longer touch.)

Your Xiaomi Redmi 3S is in EDL mode now.

- Open XiaoMIFlash tool and select "unlock-modified" folder from your Desktop and click Refresh.

(you should see something like this: detected-device-Mi_Flash.jpg), your COM port could be different.

- Click Flash and wait to finish. If everything is OK you should see SUCCESS in MIFlash result.

Read messages on your phone's display and accept all requests.

- Turn off your device and start again in fastboot mode; (VOL-)+(Power button).

Attention! You need to start your device in fastboot without booting into the system.

- After restart in Fastboot Mode close XiaoMIFlash tool and go into "RedMi3S_Fast__Unlock_edBL_specTWRP" folder.

- Run doit1.bat.

Your phone will reboot, first startup will take around 10-15 minutes.

After the reboot, turn off the phone, go to fastboot mode again.

If will take more than 15 min to reboot, restart in Fastboot Mode by pressing together (VOL-)+(Power button)

- Run doit2.bat.

TWRP Custom Recovery should start. Swipe to allow changes to system partition. (Flash latest TWRP for your device)

Connect your device to PC, copy custom ROM to SD card and Flash it.

OBS. !!!

If you are flashing any XIAOMI.EU ROM zip file, you need to delete firmware-update/emmc_appsboot.mbn in the zip first.

You can't use MIUI OTA.

All files and methods were taken from the XDA forum, xiaomifirmware.com, en.miui.com or from different websites

(including from Russia, geekteam.pro)during the documentation.I express my gratitude to all of them.

My only merit in this tutorial is to describe how I succeeded to unlock my bootloader.