If your intent was to find how to add game covers to the emulator interface, you can follow these steps:
To understand the importance of the build, one must understand Android's processor architecture landscape. Aethersx2 Armeabi-v7a
The official, final version of AetherSX2 primarily optimized for 64-bit. If your intent was to find how to
: A community-maintained "patch" that improves the original AetherSX2 code and removes advertisements/bugs found in later official versions. AetherSX2 Archive : Legitimate older versions for 64-bit devices. For 32-bit devices, there is currently no viable way AetherSX2 Archive : Legitimate older versions for 64-bit
Early beta versions of AetherSX2 (pre-1.0, sometimes labeled "Alpha 0.9") contained experimental ARMv7 support. These were never officially released on the Play Store. After version 1.0, the developer removed 32-bit support entirely to focus on performance and stability on 64-bit hardware.
This is one of the few PS2 emulators that supports 32-bit architectures. However, it is much slower than AetherSX2 and many games will run at unplayable frame rates.