[Q] SC6825 speedtrum how to flash rom topic

hi, i have M-horse F7 china android phone, And I bootloop it, Is anyone here know how to flash roms on this device? Because i have really no idea what to do,

here's the link for specs. h t t p: // w w w .alibaba.com/product-detail/2014-new-products-3-5-Inch_60136260650.html