hello Dear infinity team & users
This is one method for find correct flash file in support/download area
For Example:
one chinese phone whit SANSING v55/2GSM_Bluetooth name 
Now, for find correct its flash file
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Open Chinese Miracle
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Go to Servise tab
for seeing flash file name
1- Click on Read detailed information & Do it process
Please see No.2 part in window
ver sw1: M678_PCB01_GPRS_MT6226_S01.BC08C-MULTIV01_01B01.BIN
This is your flash file name
2- you must select it witouth .BIN & right click+COPY 
in this step , You must Go to Support/Download area
3- go to this Address ......... Index of root/Flash Files
4- Now, You Must right click+PASTE your request file name copied
5- Click on SEARCH Botton & wait
Its finished :
you have request flash file for download so enjoy of this method 
Click on it for Download
offer to dear infinity team 
Good Lock