This is from the DVD Benchmark review of the 1910. If macrobloking is an issue with your display it will never be fixed by any firmware upgrade.
"The unfortunate side of implementing the FLI2301 chip is the presence of the “macroblocking” problem. This manifests itself as blotches of digital noise mainly in backgrounds. This noise is essentially an enhancement of MPEG artifacts that are already inherent in the DVD transfer, but at times grossly exaggerated. In our study of the problem, we have found that the end user’s display plays a key role in the issue. It seems that displays that have their own necessary internal scalers tend to exaggerate the problem to almost unwatchable levels. This has been most noticeable with plasma displays, with an emphasis on the popular Panasonic line. Bottom line is, be wary of coupling this player with a display that has to do its own scaling inside. I would recommend hooking up the player to a similar display, or under ideal circumstances, to your own display before purchasing. If you don’t have that option, I would make sure the store you buy from has a good return policy."
