This let people rip bit-perfect copies of their DVD discs and distribute them online.With Blu-ray, they wanted to prevent this and introduced more extensive copy protection.Please click on the link below for your specific Blu-ray Disc player manufacturer or Blu-ray Disc playback software vendor and you will be directed to their designated web page for more information.
With DVD, the copy protection scheme was compromised shortly after release.
Sometimes the Blu-ray standard is upgraded, and you need a firmware update to let your player take advantage of those changes.
Some manufacturers will take positive advantage of this, and add new features to their players.
How long they do this for, and how often, varies quite a bit.
Sony and Panasonic both have been very good at keeping their players up-to-date, going all the way back to their very first Blu-ray player models.