first in fastboot (SW_binaries) in A And B then flash the rom in fastboot
fastboot flash oem_a SW_binaries_for_Xperia_Android_10.0.7.1_r1_v6a_nile.img
fastboot flash oem_b SW_binaries_for_Xperia_Android_10.0.7.1_r1_v6a_nile.img
downlod (SW_binaries) from here
https://developer.sony.com/file/download/software-binaries-for-aosp-android-10-0-kernel-4-14-nile/
take a note
only BitGapps working with Aosp 10 for xa2 ultra
hello you could install gapps in this room ?, if that's how you did it? it does not install me with twrp or nano, nor mini. Thank you