It used to be this method.

http://docs.autodesk.com/ACD/2013/ENU/Inst...Number=d30e5982

I remember reading that Autodesk disabled this feature.

Autodesk also disabled/ removes Autodesk Virtual Agent (AVA). Its a type to ask questions and even offer download/ activation of previous versions of autocad based on your registration. They stopped it just this year in May.

https://resources.imaginit.com/support-blog...k-virtual-agent

I used AVA to download latest versions of Autodesk products with just an Autodesk account.

If the migration method does not work, the only way today is to find a reseller to help out.

https://www.autodesk.com/resellers/locate-a...seller/malaysia

But be ready to be told that they do not support old version anymore and you can only purchase new version. Autocad has turned into subscription base model.