Hey guys I have made a step by step guide to show you how to unbrick your phone!!!!
NOTE:-I AM NOT RESPONSIBLE FOR ANY DAMAGE IF U HAVE NOT FOLLOWED THE TUTORIAL PROPERLY!!!!(AND YA IF I MISSED ANY THING DEN TELL ME IF U HAVE PROBLEMS UNDERSTANDING D STEPS)
PREREQUISITES:-
1.Your Q800 ofcourse 
2.SP flash tools(that version which i have given in the download link)
3.VCOM drivers(in attachment)
4.xolo rar file(in attachment)
PROCEDURE:-
1.Make one folder in ur drive and name it wid ur name and copy all attachments into dat
2.First unrar VCOM drivers and install the driver till it comes dat it installed successfully
3.Then unrar sp flash tools and xolo rar file
4.Open sp flash tools(Flash_tool.exe)
5.Go in file tab and click on open scatter file
6.Now browse to the xolo rar file which u unrared and select MT6589_scatter txt file
7.all things inside the xolo rar file will load up
8.Now click on Firmware–>upgrade and it will search for the device
9.Now switch off ur phone and connect it with pc through usb cable
10.The tool automatically detects ur phone and starts d procedure
11.First a red line will come den after few seconds blue lines will load up den yellow and etc
12.When a green circle will come saying upgrade finished,just close that and d tool too.
13.Remove usb cable and switch on ur phone it will come as fly IQ446
14 After that follow d procedure and setup ur phone
15.Note that this of flyIQ446 and it works for Q800 also(i did it).So if u want ur stock rom of Q800 to be flashed back using TWRP(see in attachments) or CWM, den download Q800 stock rom(see in attachments)
16.To gain back guarantee flash the stock recovery.img(see in attachments) thru mobile uncle tools(see in attachments)
17 Now u can enjoy ur stock rom for warranty purposes!!!!
18.Enjoy and if any doubts ask me!!!!!
ATTACHMENTS:-
1.VCOM DRIVER—>https://docs.google.com/file/d/0BxBsbgtpWSyWY2ZIN0VNSUFrcnc/edit?usp=sharing
2.SP FLASH TOOLS—>https://docs.google.com/file/d/0BxBsbgtpWSyWT0JXR2phUHV5LU0/edit?usp=sharing
3.XOLO RAR FOR UNBRICK—>https://docs.google.com/file/d/0BxBsbgtpWSyWRU5xYXVfak9Qbnc/edit?usp=sharing
4.TWRP RECOVERY IMAGE—>https://docs.google.com/file/d/0BxBsbgtpWSyWaEo5TVlZcHQ2clk/edit?usp=sharing
5.XOLO Q800 STOCK ROM UNROOTED—>https://docs.google.com/file/d/0BxBsbgtpWSyWaVpWdUhVRWZLc2s/edit?usp=sharing
6.STOCK RECOVERY IMAGE FILE—>https://docs.google.com/file/d/0BxBsbgtpWSyWYWp6Zk93dF9wWVk/edit
7.MOBILE UNCLE TOOLS FOR FLASHING STOCK RECOVERY IMAGE—>https://docs.google.com/file/d/0BxBsbgtpWSyWVHdBOG9PN3hRMUk/edit?usp=sharing
