Introduction | Unity MARS | 1.3.0 (unity3d.com)
It seems no way to upgrade yet. I aready tried the package-manager and last mars-installer.package.
I can’t wait.
hello @JYGames_1 ,
You should see version 1.3 appear in the package manager, it might take a bit for it to go live but you should be able to see within 24hrs 
1 Like
Hi there! Are you unable to see MARS 1.3.0 in the package manager? It should be available to upgrade if you expand the package listing. What Unity version are you using? This may be different in different versions. If you can’t upgrade through the package manager UI, you can always edit your manifest manually and change the 1.2.0 to 1.3.0 for the MARS packages. Please remember to upgrade all 3 MARS packages, as you will see compile errors if you have MARS 1.3 and MARS AR Foundation Providers 1.2 or vice versa.
Here is what I see in the package manager in 2019.4
I am using Unity 2021.1.0b10.2062. Sadly it show v.1.2 only.
Ok, I will try to edit my manifest manually. Thanks all!
I changed this from “com.unity.mars@1.2.0” to …1.3.0
then package-manager starting show other versions.
This problem was solved. I won’t forget other precautions. Thanks again!