Original source: occ

First, download “base” game (2020020300): https://nyaa.si/view/1277705
Second, apply update (20200317): https://nyaa.si/view/1389803
Then, apply this update (20200728) to update to A20 PLUS.

Or just download and use the AIO if you’re a monkey: https://nyaa.si/view/1420285

Hail o mighty raki saionji a.k.a. fuck ddr a.k.a. bakaaa!
https://dev.s-ul.net/rakisaionji