The grimrock_1_3_1_to_1_3_6_patch.zip file you have requested: Official Patches / Legend of Grimrock v1.3.1 to v1.3.6 Patch - 2.21mb is not available. Perhaps try browsing all files for the game Legend of Grimrock and upload any files you want to share or are missing. This is the only information we could locate:
This patch will update Legend of Grimrock from version 1.3.1 to version 1.3.6. Changelog coming soon.