It is not always easy to decide if it is the same problem or just similar. In the forum guidelines is also written, you should first search for a same error. I consider this question to be legitimate, since update.bat last changed in December 2018. This is valid for all distributions that have been released after that time.
update.bat calls update.ps1 and update.ps1 checks if there is a newer version in downloaded and extracted folder, if so, it uses this newer version.
See above:
“New update.ps1 was found - executing it instead (found in c:\ …)”
The newer update.ps1 should be valid exactly for the version you are trying to install.
update.ps1 was last changed on 02 Aug 2019 (=7 days before 2.5.0.M2 was released.) So the latest update.ps1 is used in 2.5.0.M2, 2.5.0.M3, 2.5.0.M4 and all Snapshots after 1651.