The version number you cited (V1.2.12.54620) implies you are playing on the "Stable" branch that followed the massive "1.2 Beta" phase. Key features specific to this era include:
If you have already installed the repack, take your experience to the next level: Mount And Blade II Bannerlord V1.2.12.54620-Repack
If you are downloading a repack, you are likely interested in mods. Version 1.2.12.54620 is the "stable anchor" for the modding community. Unlike the constant hotfixes of version 1.3.0, this build supports hundreds of mods. The version number you cited (V1
You are not just a soldier; you are a general. Unlike the constant hotfixes of version 1
Before we discuss the "Repack" aspect, it is crucial to understand the vanilla game version. Version number 1.2.12.54620 (often referred to in the community as patch e1.2.12) represents a significant milestone in Bannerlord’s post-launch support. This is not a beta branch; it is a stable, mature build that addresses hundreds of bugs, balance issues, and quality-of-life requests.
This is where the V1.2 updates have had the most visible impact.