Update a VITA with Nightly

I must be doing something wrong.

I’m trying to update my Vita’s RetroArch to the latest nightly.

I download the VPK and the data zip. I uncompress each and copy them over my current files on my VITA.

When I load RetroArch and go to system info, I still see build date of May 10th.

Any ideas what I could possibly be doing wrong? I don’t see any other files or versions?

Thank you!