There are two roms that you need to select when you install it.
Check your firmware vision number of your device.
If the number include "SD", such as A5-C1-Blackview-SD-Q20160701 then
you need the ROM A
ROM A download site : https://mega.nz/#!6x8yWahR!KrgzBBxax3a_ ... P_Tf3-_oJM
If the number do not inlude "SD", such as A5-C1-Blackview-Q20160629, then please
you need the ROM B
ROM B download site :https://mega.nz/#!uk8FEajI!LubobIiiQsqd ... wOFuo9Zbrs
Please check carefully the firmware verison number before you do a ROM flash because the wrong rom will cause a
huge demage to your device.