Always use a wired Ethernet connection when downloading to your DEST folder. Wi-Fi drops can corrupt the diagnostic data packets.
When the ODIS installer asks for the destination, browse to this folder. The software will save this path in its configuration files. Why the Download Destination Fails odis download dest
It is best practice to create a folder named ODIS_Data or ODIS_Updates directly in the root of your drive (e.g., C:\ODIS_Updates ). Always use a wired Ethernet connection when downloading