Heat the iOpener for thirty seconds.

Throughout the repair procedure, as the iOpener cools, reheat it in the microwave for an additional thirty seconds at a time.

Be careful not to overheat the iOpener during the repair. Overheating may cause the iOpener to burst.

Never touch the iOpener if it appears swollen.

If the iOpener is still too hot in the middle to touch, continue using it while waiting for it to cool down some more before reheating. A properly heated iOpener should stay warm for up to 10 minutes.