I have the boox max, not the max 2. But for what the DPT-RP1 does, it is superior to the MAX2- annotating PDFs. The Neo 2 app for annotating is quite bad.
First, you can't just start writing - you have to press on screen, and select annotation.
The annotations are also not saved directly to the file. You have to export, and then it is saved to a new file somewhere on your device.
Neo 2 also doesn't play nicely with Dropbox - you can't just open a file from dropbox, edit in Neo 2, and save the changes.
For note taking, the supplied papers are really bad - the lines are too thick and dark.
There is also no good way to convert a bunch of notes to PDFs. You have to convert to png page by page,.. (I think)
All these problems exist since the Max days, and should take very little for a competent programmer to fix, but Onyx doesn't really care. You can use other note taking apps on android, but none currently work well with the stylus and the e-ink - much too slow!
So, for now hacking the RP1 could give benefits for people who want to use the device for taking notes and annotating pdfs.
---------- Post added at 03:41 ---------- Previous post was at 03:20 ----------
I'm not sure this helps, but this project implements communicating with the RP1: