Also check out other Lumia WinPhone 8.0/8.1/10 Phones Flashed by ATF:
ATF USB Dead Boot Repair v12.67 Update
Microsoft Lumia 430 DS – Fully Tested
Microsoft Lumia 435 DS – Fully Tested
Nokia Lumia 520 – Fully Tested
Nokia Lumia 530 – Fully Tested
Nokia Lumia 620 – Fully Tested
Nokia Lumia 625 – Fully Tested
Nokia Lumia 630 – Fully Tested
Nokia Lumia 638 – Fully Tested
Nokia Lumia 720 – Fully Tested
Nokia Lumia 735 DS – Fully Tested
Nokia Lumia 810 – Fully Tested
Nokia Lumia 820 – Fully Tested
Nokia Lumia 822 – Fully Tested
Microsoft Lumia 830 – Fully Tested
Nokia Lumia 920 – Fully Tested
Nokia Lumia 925 – Fully Tested
Nokia Lumia 928 – Fully Tested
Microsoft Lumia 929 – Fully Tested
Microsoft Lumia 930 – Fully Tested
Nokia Lumia 1020 – Fully Tested
Nokia Lumia 1320 – Fully Tested
Nokia Lumia 1520 – Fully Tested

You Can Download Flash Files Here:
Nokia Product Code Listing for NaviFirm+ Download – (Nokia 730, 735, 830 Added)

Microsoft Lumia 640 XL DS WinPhone 8.1 Flashed Successfully with ATF

Here are the Screenshot:

Here is the Flashing Logs:

Code:

Windows Phone 8/8.1 Flashing Started Loading Flash Files Please Wait… ====================================================== Windows Phone 8/8.1 Lumia Flasher ====================================================== If the Phone is ALIVE 1. Power On the Phone and Connect it to the USB Port If the Phone is DEAD 1. Connect Phone to the USB Port 2. Press and Hold the VOLUME DOWN and POWER Buttons 3. Wait until the Phone Vibrates Shortly… 4. Stop Pressing the Buttons… If the Phone is DEAD BOOT 1. Connect Phone to the USB Port 2. Install Correct Drivers: “Nokia Emergency Connectivity” ====================================================== ================================================ Basic Phone Information ================================================ SW Version : 02166.00000.15103.05001 IMEI Plain : 357158063859909 IMEI2 Plain : 357158063859917 Phone Type : RM-1067 HW Version : 2400 Product Code : 059X1G0 Basic Product Code: 059W080 Module Code : 0206150 PSN Number : 7C555CBAU Operator Name : 000-PH Phone Version : BuildDate : Mar 4 2015 , BuildType : Release , HelloString : NCSd for WP8 , Version : 5.0 Manufacturer ID : RM-1067_1009 Security Mode : Restricted ================================================ Extended Phone Information ================================================ Public ID : E3407008726D21EE8C1A851FB6BF3AEEDF9031A7 Wireless Lan 0 ID: 80:C5:E6:0A:ED:DC Wireless Lan 1 ID: 80:C5:E6:0A:ED:DD Wireless Lan 2 ID: 80:C5:E6:0A:ED:DE Wireless Lan 3 ID: 80:C5:E6:0A:ED:DF Bluetooth ID : 80:C5:E6:0A:B8:52 ================================================ Simlock Information ================================================ SIMLOCK STATE : Not Locked Booting Flash Mode Initiated… Please wait upto 15 Seconds for HW Reset Boot Flash Mode Successful… Buffers Flushed OK… Phone Info Query Start… Blocks Returned: 0x09 Blocks Block ID 0x01 : 00241000 Block ID 0x1F : 01 Block ID 0x02 : 00240000 Block ID 0x03 : 00E90000 Block ID 0x05 : Nokia.MSM8226.P6199.2.0 Block ID 0x0D : 0001 Block ID 0x0F : 0301010100000101FF

 

 

More Information : http://forum.gsmhosting.com/vbb/f609/atf-lumia-640-xl-ds-winphone-8-1-full-flashing-emmc-tp-first-world-1944254/ Go This Links

Fahim MahmudSoftware Products (official support)Also check out other Lumia WinPhone 8.0/8.1/10 Phones Flashed by ATF: Microsoft Lumia 430 DS - Fully Tested Microsoft Lumia 435 DS - Fully Tested Nokia Lumia 520 - Fully Tested Nokia Lumia 530 - Fully Tested Nokia Lumia 620 - Fully Tested Nokia Lumia 625 - Fully Tested Nokia Lumia 630 - Fully Tested Nokia Lumia...Android Help,Troubleshooting  & Stock Rom