Sony has released a firmware update for the PlayStation 4 that is designed to improve overall system performance. However, some users are reporting that their PlayStation 4s are blinking blue, indicating a problem with the update. If you’re experiencing this issue, it’s important to try and resolve it by following Sony’s instructions. If that fails, you can try reverting to an older version of the firmware update or contacting Sony support. In either case, be sure to provide as much information as possible so that Sony can help diagnose and fix the problem. ..