Eidos has released a patch for the PC version of Tomb Raider: Underworld to address some of the issues with the game. The Xbox 360 version has received two title updates, both released at the same time as the exclusive Premium Downloadable Content. Below are the update lists and a link to download the PC patch.

PC Patch v1.1

• Inability of users to map the mouse buttons.
• Inability of users to map the ‘center camera’ button.
• Some occasional crash fixes.
• Graphics card stability:
  • A change to re-enable use of some graphics card features on ATI hardware, with their latest drivers.
  • Progress has been made towards addressing stalling on GeForce 6/7 series hardware.
• Fixed compatibility issues with certain Realtek sound drivers which could cause crashes.
• Autosaves now made for each chapter. Number of save slots is increased to accommodate these.
• Bug with ramp not raising in Xibalba.
• Fixed black screen deadlock when skipping doppelganger cinematic.
• Issue with door lever at Kraken room entrance.
• Occasional control issue during headshot move.
• Fixed an occasional problem when entering a save game filename.
• Some PDA fixes.
• Some cinematic subtitle fixes.

Download the Patch v1.1 (Note: this patch is for disc-based versions only, NOT digital downloads.)

Xbox 360 Title Update 1

• In some circumstances reward progress could be lost when restarting TRU either through a save game reload, or through starting a new game.
• In rare circumstances, animated water running down walls (textures) in TRU could cease to animate.
• While being “teleported” during a cinematic (where the player will end the cinematic in a new position), there were rare circumstances where Lara would be left with a very high velocity which caused her current or next jump to throw her much further.
• While executing an adrenaline attack (which causes the game to go into a “bullet time” slow motion effect), if the player restarted the game, or reloaded a save game, the subsequent menu animation for costume and weapon selection would be in slow motion.
• Under rare circumstances the player could teleport from one fluid movement primitive to another.
• Under some circumstances Lara could “miss” picking up a portable object, which led to her having to re-attempt the pick up.
• Under certain circumstances the full screen effects for adrenaline mode could become corrupted.
• Under rare circumstances engaging and pulling an object with the grapple caused a crash.
• Fixed numerous issues in the code that was causing conflicts between OLAPI and the system listener relating to saving loading and mounting of downloadable content packs.
• Fix for crash when loading a game that was previously saved while the player was inserting an object.
• Fixed a rare crash when trying to load a save game on level 5.
• Fixed a bug where the player could force the slow down from the adrenaline mode to never end (even though the mode itself had ended).
• When downloading content from Xbox Live, the current language selection no longer gets changed back to English when the new content is mounted.
• When mounting DLC content, the content is now properly associated with a user profile to support HDD roaming.
• Other minor issues addressed.

To get this title update, just play the game while your Xbox 360 is connected to Xbox Live.

Xbox 360 Title Update 2

• Improved jump targeting for pillar jumps in TRU.
• Fixed a ledge corner transition problem from TRU where Lara could end up stuck on a ledge.
• Fixed a series of bugs from TRU where activating the PDA during the transition back to the main menu could lead to a crash.
• Improved Lara’s edge detection for TRU.
• Made General CPU performance improvements by reducing cache misses and improving trigger volume detection code. Performance gains were significant for Lara's Shadow, and slightly improved for Beneath the Ashes and TRU.
• Fixed a bug where the removal of an MU that contained downloadable content packs (costumes) could lead to a notification dialog being stuck on screen.
• Disabled Tomb Raider Legend cheats which were inadvertently included into TRU and could lead to numerous crash situations (infinite health caused Lara to be able to swim out of the bright blue liquid - thrall eitr - and end up falling out of world).
• Fixed a condition where small memory leaks were building up fragmentation in the heap. This could theoretically have caused numerous “random” crashes over very long play sessions where the player did not transition from one level to the next.

To get this title update, just play the game while your Xbox 360 is connected to Xbox Live.