Despite its benefits, some users reported issues after installing the RR52C03A firmware in 2021. Here’s how to resolve them.
If you see this version, your device is running the mid-2021 firmware baseline.
Many slim drives with RR52C03A firmware shipped with a limited number of region changes for DVD playback. The 2021 update did not increase the change counter (locked at 5 changes via the host system), but it fixed a bug where the drive would incorrectly report a “region mismatch” even when the correct code was set, forcing unnecessary Windows driver reinstallation.