Version 5.10 (and similar recent iterations) for the BDP-450 typically addresses:
Ensure the filename matches exactly what the player expects and that the USB is formatted to FAT32. Try a different USB port (front vs. back). pioneer bdp 450 firmware 510 download new
The update process is typically performed via a USB flash drive. Follow these steps to ensure a successful installation: Pioneer DJhttps://www.pioneerdj.com Firmware Update Manager - Pioneer DJ Version 5
Installing non-official firmware like 5.10 is done at your own risk. If you are primarily looking for stability and compatibility with the latest movie releases, it is recommended to stick with the latest official version from Pioneer Electronics. Support | Pioneer Electronics pioneer bdp 450 firmware 510 download new