Update worked.
SM-A300FU = a3ulte
E3004: This package is for device: gprimeltexx,fortunafz,grandprimelte,grandprimeltexx; this device is . I had to update TWRP, twrp 3.0.2-1-ashyx => 3.3.1-1.ashyx
open gapps micro did not fit … had to install pico.