You can download any past version of WinSCP from:
https://sourceforge.net/projects/winscp/files/WinSCP/
https://sourceforge.net/projects/winscp/files/WinSCP/
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
Network error: Software caused connection abort
PUT
options -nopermissions -nopreservetime -resumesupport=off