The RPS3 firmware 2021 includes the following key features and changes:

: Installation was required for users wishing to remain signed into the PlayStation Network (PSN) and sync trophies. Impact on Modding and Homebrew

: As with most late-cycle PS3 updates, the official patch notes stated it "improves system performance". Blu-ray Player Encryption Keys

Even with the correct file, users encounter issues. Here are fixes for the top three errors.

| Metric | Firmware 4.81 (2018) | Firmware 4.88 (2021) | Firmware 4.90 (2023) | |--------|----------------------|----------------------|----------------------| | Boot time (seconds) | 28 | 22 | 23 | | RAM usage (idle) | 512 MB | 498 MB | 510 MB | | Compatibility rate | 62% | 73% | 72% | | SPU thread stability | Moderate | High | High |