Download Xiaomi Redmi S2 Stock Firmware with EDL test point tutorials

Xiaomi Redmi S2  Stock ROM/ firmware
Normally to get into download mode of most qualcomm devices all you need to do hold volume up or down and connect device to PC or hold both volume buttons and connect to PC. Xiaomi devices do not go into EDL mode just holding volume buttons and connect to PC. To enter that mode, you either need to use the EDL fastboot commands or Xiaomi EDL jig usb cable. Using fastboot commands only work when the phone can still boot up to fastboot mode so if the phone is bricked ie flashed with a non compatible firmware, this method will not work so we need to use the test point method to resurrect this device.
The tutorial below will show you how to unbrick Xiaomi Redmi S2 (YSL) using EDL testpoint method. 


Things you need.
XiaoMiFlash Tool -- DOWNLOAD
Minimal adb & fastboot -- DOWNLOAD
Qualcomm usb drivers -- DOWNLOAD
Qualcomm Image Flash Tool QPST (optional) -- DOWNLOAD



Xiaomi Redmi S2 Stock ROM / Firmware
ysl_global_images_V10.0.1.0.OEFMIFH_20180829.0000.00_8.1_global
DOWNLOAD




Download the latest firmware of redmi S2 from above links.
Rename exension of the file downloaded to .tgz 
Now extract the firmware using winrar or 7zip.

Install Qualcomm usb drivers
Install minimal adb & fastboot (system wide installation)
Install and launch XiaoMiFlash tool.
Click on Select button and navigate and select extracted firmware folder (ysl_global_images_V10...........)
Select clean all or clean all and lock.

Open the back cover of the phone then disconnect battery and connect phone to PC.
Now bridge the two EDL Contacts testpoints as shown on the image below using pair of tweezers or any metal.


Xiaomi Redmi S2  EDL test point

As you touch the points, device will be detected by PC, Click on Refresh button in XiaoMIFlash Tool.
Flashtool will detect device. Now you can click flash button to begin the flash process.
Do not disturb the device until process is complete.
When flashing is complete, disconnect phone from PC and boot up.
Remember first boot after this process takes longer than usual.



USING QFIL TO UNBRICK XIAOMI REDMI S2VIA EDL TEST POINT
If you do not like using XiaoMIFlash tool, you can also use Qualcomm Flash Image Loader (QFIL) to flash or update this device.
Download the latest version of QFIL.
Extract and install the QFIL downloaded.
Now navigate into the QFIL installation folder usually C:\Program Files (x86)\Qualcomm\QPST\bin and launch QFIL
Under Build type, select (tick) Flat Build
Under Select Programmer, Click Browse button then navigate to firmware folder open images folder and select prog_emmc_firehorse_XXXXX.mbn file.
Click on Load XML and select rawprogram0.xml and Patch0.xml
Connect device to PC in EDL mode as shown on image above.
Port will now appear on QFIL tool.
Click Download button and wait for flash process to complete.
When process is complete, disconnect and boot up device.

Hope this helps

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