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Hotfix for a confirmed shader deployment mismatch behind Xbox/AOT runtime setup failed. The reported log showed the FSR library being rejected by the device OS, followed by GPU setup failed.
FSR and all 603 title Metal shader libraries have been rebuilt with an explicit iOS 18.0 minimum instead of inheriting iOS 27 from the development SDK. Shader-cache stamps now include the deployment policy, and release packaging rejects libraries targeting an OS newer than the app minimum. The optional SMAA build uses the same policy.
Download MCLA-4iOS-1.0.4.ipa and re-sign using your own account. Version 1.0.4, build 6. Keep the same bundle identifier and signing account to preserve app data. No original game files are included.
Export Logs remains included. If startup still fails, turn Graphics → Retail Mode OFF, fully close and reopen MCLA, reproduce the failure and export the ZIP.
The build, signatures, all shader deployment targets, IPA integrity and checksums are verified. A real-compiler regression rejects the original SDK-default target and accepts the explicit iOS 18 target. Physical-device confirmation on the reporting phone remains pending.
Mac Game Prep is unchanged; use the 1.0.2 download.