General:

OS X version coming soon.

This release adds support for 4 new renderers, adds muxing and many improvements to FFmpeg, improves security and a lot more!

Changes since 2.4.2:

General:

Updated layout on the Transcoding Settings tab
Improved aspect ratio handling on Panasonic and Sony TVs
Enabled ASS/SSA subtitle support on Linux by default
Now compiled with Java 7
Optimized code for Java 7
The installer only tells Windows to run UMS at startup on new installs or if the user has specified it in UMS
Added RTMP support to FFmpeg Web Video engine
Fixed fontconfig support on OS X
FFmpeg can transcode to x264 with the renderer option TranscodeVideo=H264TSAC3
FFmpeg supports video muxing
Made muxing more reliable
Improved audio sync in FFmpeg
Improved FFmpeg buffering
Bandwidth limit is more accurate with FFmpeg

Renderers:

Added support for KalemSoft Media Player on BlackBerry PlayBook devices
Added support for Netgear NeoTV
Added support for Telstra T-Box
Added support for Yamaha RX-3900
Improved support for Sony Blu-ray players

Languages:

Made languages more consistent with eachother
Updated Russian translation (thanks, Tianuchka!)
Changed default audio/subtitles language priority for English users, which:
Disables subtitles when audio is English, otherwise look for English subtitles, prioritizing external before internal subtitles
Added language flags for Arabic, Croatian, Estonian, Latvian, Serbian and Vietnamese

External Components:

Updated FFmpeg for Windows and Linux to SB8, which:
Increases x264 encoding speed
Updated InterFrame to 2.5.0, which:
Improves scene-change detection
Minimizes artifacts
Updated Java Runtime Environment automatic downloader for Windows to 7u17, which:
Fixes serious security holes
Updated MediaInfo for Windows to 0.7.62

Upgrade Notes:

For versions prior to 1.5.0:
It is recommended to delete your UMS.conf file prior to installing this version. For Windows users you can choose the "clean install" option while installing instead.

For all versions:
It is recommended (but usually not necessary) to uninstall the older version before installing the new one.

Thanks:

Cameron Spiers for building the OS X version

UPDATE 2:

- added support for ps2 package files.

UPDATE:
- updated repack pkg proccess to fix issue with packages that have large amounts of files such as PAC-MAN Championship Edition DX, now when creating a package file a new window pops up for the packing process don't close this or it will not create your package.
- updated app to include more info so it's easier to understand and follow what it's doing every step of the way.
- setup the app so when repacking games if it also contains the PARAM.SFO in C00 it will overwrite it with the PARAM.SFO in USRDIR after the step that allows you to alter it so if you do decide to alter the PARAM.SFO it will then be copied to C00 if it exists so you won't get a PARAM.SFO mismatch error when trying to repack the pkg file.

- Fixed errors when using pkgview.exe and fixelf.exe
- Fixed error messages when cleaning the temporary files

- rpi: Display backdrop art using dispman instead of using OpenGL
- rpi: Remove dead code
- rpi: Reduce locking causing UI slowdown
- rpi: Initial stab of working hw accelerated h264 playback
- Split h264 annexb conversion to a file of its own
- glw/video: Simplify some code
- rpi: Compile with -funwind-tables for stacktraces, also add -DOMX_SKIP64BIT
- Don't do subtitle scanning if no title/imdbid/opensub hash/etc is available
- glw: Move all user configurable flags into glw_flags2
- Add an optimization step to .view compiler
- Fix broken js_htsmsg_from_object() when array/object is empty

* Improved discless compatibility (even more) on 3.55/4.21/4.30CEX firmwares
* A BD-DISC icon with [PlayStation®3] text will appear in XMB to replace /app_home/PS3_GAME entry
* Tested few games, which didn't work discless before and now work just fine (like LEGO:Indiana Jones, LBP2 and others)
* Upon launch mM will try to restore default LV2 environment by resetting syscalls 35, 36, 37, 141, 142, 600, 604 (this should fix problems when mM is launched after Iris)

- deleted lv1ldr protection against consoles converted “unofficially”
- lv2 peek / poke
- lv1 peek / poke
- Integrated and Iris Payload Manager 2.21
- spu_iso_rvk_pkg reinstall cfw patched for successful
- spu_token_processor (qa flag activated if you had installed since 3.55)

- Adding Core OS 31.4 compler
- Adding and all self SPRX 4.31
- Install pkg of displacement of below home manager
- Change icon
- Every option of my previous cfw its available
- QA flag enabled