Theoretically, you could cross-compile AetherSX2 for ARMv7. In fact, early proof-of-concept Play! emulator builds exist for 32-bit. But they run like a slideshow. Even flagship 32-bit chips (like the Snapdragon 801 in the Galaxy S5) lack:
If you have a 32-bit device and still want to attempt PS2 emulation, your options are very limited:
For 32-bit Android users, the path forward involves either upgrading to a modern 64-bit smartphone (even a used Snapdragon 845 device like the OnePlus 6 or Pocophone F1 can be found affordably) or exploring less demanding emulation options. The PSP, PS1, N64, and Dreamcast libraries offer thousands of classic games that run beautifully on older hardware. Aethersx2 32 Bits Android
AetherSX2 relies entirely on the ARM64 (64-bit) instruction set. The developer built the emulator utilizing modern 64-bit registers to handle the intense processing demands of the PS2's Emotion Engine.
Purely open-source, highly portable, and does not require a PS2 BIOS file to boot games. Theoretically, you could cross-compile AetherSX2 for ARMv7
Perfect original PlayStation (PS1) emulation.
There is no secret 32-bit build from the original developer. But they run like a slideshow
While you cannot force AetherSX2 to run on a 32-bit system, you have a few alternatives to explore: