Here are the last 2 major upgrades and it is quite impressive what firmware upgrades can do...
LIST
Major Firmware Release June 29, 2005
Fixed shimmering that bothered certain percentage of the user population
Added Off option for Sharpness
Improved audio/video synchronization
Added five Audio Delay options to suit various receiver systems. Options include 10ms, 20ms, 30ms, 40ms, and 50 ms.
Added On/Off options for Faroudja “CCS” (Cross Color Suppression)
Added On/Off options for Faroudja “TrueLife” enhancement
Added On/Off options for Angle icon
Added support for 540p DVI resolution
Added a toggle between the silvered-colored remote and the new black-colored remote by pressing and hold the STOP key on the front panel of the OPPO player for 3 second and then release. The firmware is default to support the silver-colored remote.
Major Firmware Release April 13, 2005
Fixed pixel cropping
Improved Y/C delays via DVI and component outputs
Corrected the mislabeled Sharpness/Contrast/Brightness control options. Added Saturation control as an option.
Corrected PAL 720p and 1080i output at 50Hz instead of 60Hz
This release added the following new features:
Supports multiple aspect ratios for DivX AVI files, including: 720x480, 720x576, 704x480 704x576, 352x240 and 352x288
Automatically closes the tray when pressing the POWER button on the player unit to power off
Enabled DTS decoding through analog connection in addition to digital connection
Zoom and Angle on-screen-displays are set to disappear after 5 seconds. The “Pause” is set to stay on screen to remind the user of the pause mode, based on the user input.
Adds more zoom options: 1.2x, 1.3x, 1.5x, 2.5x, and 3.5x, in addition to the original 2x, 3x, 4x, ½x, 1/3x & ¼x options. This allows letterbox to fill the screen with a non-anamorphic widescreen DVD.
Pressing the Backward key skips to the beginning of the chapter; pressing it again skips to the beginning of the previous chapter.
Adds Saturation control as an option.
Memorizes previous DVI setting in TV “Auto” mode in addition to in NTSC and Pal modes
This release changed the following default setting:
Changed the default setting of Subwoofer to 'off" on the Speaker Setup Page.