Patch 1.4 (The Witcher)

This links to information on how to upgrade from the original version to the new Enhanced Edition of The Witcher including the EAX hotfix. The patch is cumulative and contains all updates included in the previous patches.


 * Patch 1.4 (Enhanced Edition)
 * EAX hotfix

File integrity
To check the integrity of downloaded files, one can use an MD5 hash to calculate the MD5sum of the downloaded file and compare it with a known good sum. Below is a table of known good MD5sums (the list will be fleshed out shortly):


 * {| border="1" cellpadding="5" cellspacing="0" style="border-collapse:collapse;" class="sorttable"

! Filename ! MD5sum
 * -style="background:#c0a0FF;"
 * TWEE_Upgrade.exe || 9ddbb3baf43c8a7236ce1c2e3c038249
 * TWEE_English_language_pack.exe || 21e96ffd871db9797830313f5380271a
 * TWEE_adventure_The_Price_of_Neutrality.exe || f9802e7447bfb080e8f061d9acf47db5
 * TWEE_adventure_Side_Effects.exe || d811cd48e0e0b159ae4ecf977055de5c
 * TWEE_Polish_language_pack.exe || 4FBF98976639866FD2DA35EAC7AEBE5A
 * TWEE_German_language_pack.exe || 13EB798770B4E4AE461190A816A4799E
 * TWEE_Spanish_language_pack.exe || B1BF8EC36F6974D1183047C6B8F54C4E
 * TWEE_Italian_language_pack.exe || 7CC49D43B94370D51AE9216896669DBF
 * TWEE_French_language_pack.exe || E396873D7229CABCF59E8DBF8A7D2349</tt>
 * TWEE_Russian_language_pack.exe || 5E1137C01E0C30D0119668A68F5BF3D2</tt>
 * TWEE_Hungarian_language_pack.exe || 4CEA3BADABEBE4D4A3CA74491AEACAC2</tt>
 * TWEE_EAX_HotFix_2.3.exe || 276b4babe10caa335a4d571937b2bfe0</tt>
 * }
 * TWEE_Spanish_language_pack.exe || B1BF8EC36F6974D1183047C6B8F54C4E</tt>
 * TWEE_Italian_language_pack.exe || 7CC49D43B94370D51AE9216896669DBF</tt>
 * TWEE_French_language_pack.exe || E396873D7229CABCF59E8DBF8A7D2349</tt>
 * TWEE_Russian_language_pack.exe || 5E1137C01E0C30D0119668A68F5BF3D2</tt>
 * TWEE_Hungarian_language_pack.exe || 4CEA3BADABEBE4D4A3CA74491AEACAC2</tt>
 * TWEE_EAX_HotFix_2.3.exe || 276b4babe10caa335a4d571937b2bfe0</tt>
 * }
 * TWEE_Hungarian_language_pack.exe || 4CEA3BADABEBE4D4A3CA74491AEACAC2</tt>
 * TWEE_EAX_HotFix_2.3.exe || 276b4babe10caa335a4d571937b2bfe0</tt>
 * }
 * TWEE_EAX_HotFix_2.3.exe || 276b4babe10caa335a4d571937b2bfe0</tt>
 * }

There are many tools that can calculate an MD5sum, for reference one can use the freely available MD5-Checksum by Nero because it lets you specify a known good MD5sum and it automatically compares it with the MD5sum calculated from your chosen file.

Verification process

 * Step 0. Copy a MD5sum into the clipboard by selecting a MD5sum from above for the wanted file, and pressing CTRL-C.
 * Step 1. Start the MD5-Checksum program and press PASTE, the sum will be written in the program.
 * [[Image:Md5sum step1.jpg|300px]]
 * Step 2. Press BROWSE and choose the wanted file.
 * [[Image:Md5sum step2.jpg|400px]]
 * Step 3. After you choose the file the program will calculate the MD5sum, be patient, this can take a bit depending on the speed of your hard drive and processor.
 * [[Image:Md5sum step3.jpg|300px]]


 * MD5sum correct


 * Step 4. If the MD5sum is the same you will get a message saying "MD5 Verification succeed!".
 * [[Image:Md5sum step4.jpg|300px]]
 * Step 5. After pressing OK the MD5sum will be shown in a green color, now you can paste another MD5sum and check another file.
 * [[Image:Md5sum step5.jpg|300px]]


 * MD5sum Incorrect


 * Step 6. If the MD5sum is not the same as the correct one, or if you accidentally modified the written MD5sum an error message will appear stating "MD5 Verification Failed!" and some directions are given, if this happens to you then it means that the file needs to be downloaded again.
 * [[Image:Md5sum step6.jpg|400px]]
 * Step 7. After pressing OK the MD5sum will be shown in a red color.
 * [[Image:Md5sum step7.jpg|300px]]