If Roblox releases a mandatory client update, Arceus X 1.5.3 will stop functioning or crash instantly. Switch back to standard Roblox until the development team releases a patched version. If you want to dive deeper into using this software, Share public link
If you do not have access to a computer, you may try such as TweakBox or AppValley, but Apple frequently revokes their certificates, so those installations tend to stop working after a few days. Sideloadly remains the most stable method. iOS Arceus X NEO 1.5.3 - Roblox Mobile Executor
A computer (Windows or macOS) if using traditional sideloading methods like AltStore or Sideloadly. A third-party installer application. Step-by-Step Installation via AltStore If Roblox releases a mandatory client update, Arceus X 1