Can I use Android 1R7 instead of 1R6u1?

Here is the link:

Here is the UE4 Tutorial specifying 1R6u1:

—Do I have to use the old version or can I use 1R7?

Anyone have any experience doing it?

Thanks,

am on 1R7, am having no issues i believe. But i would also like to know if i should Downgrade to 1r6u1 …
thanks