Okay
I Am Also Use W810i

1 > Start Your XS++
Communication Settings :
Select Port : USB
Press Connect

Attempting to open the interface...
TURN OFF PHONE!
Hold 'C' button on phone and connect phone NOW.
You have 30 seconds...
2 > Turn Off Phone And Remove Battery,SIM Card & Memmory Card
After Insert Bettery Hold 'C' Button & Connect Cable (But First Install Your USB Flash Drive)

Finally

Baseband ID: 8040

Protocol Version: 3.1

Sending db2010_cid00_prodid_p3l.bin...

Applet ID: 061113 1250 ALUCXC125872_COMPACTPRODUCTION_ID_LOADER P3L

This is a PRODUCTION_ID loader

Activating GDFS...

Phone name detected!

Profiling SEMC phone...
Platform: DB2010
OTP CID: 49
EROM CID: 49
EROM Color: Brown
IMEI: 35906xxxxxxxxx
Phone ID: W810
Region: S_ASIA_LEVAN
CDA: CDA102295/7 R2A
Firmware Version: R4ED001
EROM: n/a
Ready for operation!