Fix a RetroArch save state that fails after a core update on Android
Do not overwrite the failing state. Back it up with its core and content receipt, restore the exact core version that created it when available from your own lawful backup, and load it there. Then make an in-game save and migrate that save forward; states are core snapshots, not a stable cross-version format.
Do this in order
- 01
Copy the state and its thumbnail without saving over either file.
- 02
Record frontend version, exact core name/version, content path and hash from the last known-good session.
- 03
Confirm the active core and content are identical before testing a copy of the state.
- 04
If they changed, restore the matching core from your own trusted backup and retry offline.
- 05
After a successful load, create an in-game save, close cleanly, update deliberately, and test that save.
- 06
If recovery fails, retain the evidence and continue from the last in-game save instead of downloading unknown cores or content.
Decision and diagnostic table
| Evidence | Diagnosis | Action |
|---|---|---|
| Different core | Snapshot format mismatch | Restore creating core |
| Same core, newer build | Version regression or format change | Test trusted matching backup |
| Different content hash | State targets another revision | Use original authorized content |
| In-game save loads | Durable save survived | Migrate with save, not state |
A state captures implementation
A state can contain CPU, memory, device, and core-specific serialization details. Its filename does not make those details portable.
Preserve before testing
Automatic slots and manual saves can overwrite evidence. Work on copies and record the exact core/content pair before any repair.
Test only with games and firmware you created, dumped lawfully, or received under permission covering your use. Emulator settings and technical compatibility never grant rights to ROM, BIOS, CHD, artwork, music, or other media.