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For players running legacy versions of the game, this update is a mandatory step for stability. However, for those on modern versions (such as the 2026 releases), this specific file is , as recent updates have moved far beyond the "b" (Beta) numbering system into the 2025.x and 2026.x series.
: Ensure any .rar files downloaded for older games are from verified community sources, as unofficial patch files can sometimes contain malicious scripts . UBOAT.Update.b125.to.b126.Only.rar
: Addressed issues where the submarine would behave erratically during docking or high-speed maneuvers. For players running legacy versions of the game,
Players generally viewed b126 as a "hotfix" rather than a content expansion. While it didn't introduce new ships like the later Type IX DLC , it was considered essential for players who were experiencing game-breaking bugs in b125. However, some users noted that while it fixed specific crashes, it did not address long-standing issues like unrealistic battery recharge rates or lighting bugs that were later discussed in community forums like r/uboatgame . : Addressed issues where the submarine would behave