Per my friendly RedM server owner and developer, this is what you do,
Open the CitizenFX.ini file in your “RedM Application Data” folder.
Change “SavedBuildNumber” to the number you need. Avoid 1311.
Example:
[Game]
IVPath=C:\Program Files\Rockstar Games\Red Dead Redemption 2
SavedBuildNumber=1436
UpdateChannel=production
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