Unbrick Htc 816w (A5_DUG)
Dead Boot-Loader (9008)

Symptoms of Dead Boot-Loader
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Due to corruption of the Boot-Loader by many reasons, Qualcommdevices enters mode called (Qualcomm Emergency Download Mode),
So, when you connect the device to PC, You'll see something like this in the device manager,


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Download Section
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Here is the full mmcblk0.img backup i've made and tested myself to unbrick alot of 816W,

mmcblk0.img (this is for 816w only)

for another brand u have read a back up as given in details
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Here is the tool we're going to use to write the img file into theSD card,

Win32DiskImager
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Unbrick Guide
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Summary of the process
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We will write an backup of mmcblk0 from a working device (same as the dead one) to an SD Card (same size as the internal memory),
Then we put that SD into the phone and let it boot from the SD Card,
Then we flash the phone with it's Official Firmware,
That's it


Detailed Guide
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1. Go to the Download section and download both (mmcblk0.img and...