Version synchronization using the 'ssh to SDDC Manager' method from https://knowledge.broadcom.com/external/article/324050 fails.
Error:
<html><head><title>404 Not Found</title></head><body><center><h1>404 Not Found</h1></center><hr><center>nginx</center></body></html>
VCF 5.0.x
VCF 5.1.x
This issue occurs when the /v1/resources/version-syncs API is run on a VCF environment lower that 5.2.0
The specific API does not exist in these lower versions which causes the 404 Not Found error
This is expected behaviour and not a product defect.