If you only have the original v1.0, you can manually apply the official update patch (if you have a 3DS with an active eShop account). However, this is region-locked to Japanese systems. On emulator, you can install the .CIA update file for Rev 1 over the base game.
The term "Rev 1" typically refers to a specific revision of the game cartridge or a post-launch patch distributed via the Nintendo 3DS eShop. Download Super Robot Taisen BX -Japan- -Rev 1-
: Connecting the various Macross timelines through a central narrative hub. Key Gameplay Mechanics If you only have the original v1
For players using Citra emulator, as it offers the most stable experience with fewer graphical glitches and no random crashes. Download Super Robot Taisen BX -Japan- -Rev 1-