Are you trying to your game to this specific version for a particular mod, or Arena Overhaul - Mount & Blade II: Bannerlord - Nexus Mods
The file string you've provided, Mount.&.Blade.II.Bannerlord.v1.5.7.259658 , refers to a specific version of that was released as part of the game's Beta Branch v1.5.7 update around early 2021. Key Version Details File: Mount.&.Blade.II.Bannerlord.v1.5.7.259658...
: Many popular mods, such as Arena Overhaul and Designer225's Miscellaneous Patches , released specific compatibility updates for v1.5.7. Are you trying to your game to this
As of , the game has advanced significantly past the 1.5.x versions. The current mainline and beta versions are well into the v1.2.x and higher cycles (following the game's full release), with modding tools like the Bannerlord Software Extender (BLSE) now supporting much newer builds. The current mainline and beta versions are well into the v1
: Notable fixes in this branch included resolved armor clipping issues and improved AI spawning locations in settlements. Current Game Status
: This version was part of a major update cycle that introduced several visual and gameplay improvements, including new Sturgian and Battanian armors and terrain enhancements.
If you are looking for this specific file, it is often found in archives for older mod setups or on Steam by opting into previous beta branches under the game's "Properties" > "Betas" menu.