Great to see another Samsung NX hacker in the wild! I'm in the process of developing a mod for my NX300 and NX30 (with the NX2000 likely compatible). It doesn't do anything yet, but I've got a lot of work done on hooking ARM code [0] and compiling modern C++ for the cameras.

Personally I think the NX300/30/2000 are the most hackable cameras ever made, even compared to the NX1/500. The read-only rootfs isn't really a barrier, since the software runs a shell script from the SD card on boot (or rather resume from hibernation, it's a pretty clever system). And unlike the newer models, they don't have an RTOS coprocessor, so everything is handled in the easier-to-modify Linux code. It's not a design decision I would have made, but it makes in-depths mods easier.

The older cameras are also easy to unbrick, since the bootloader files used for firmware flashing without a working OS were released in the FLOSS code dump. The availability of some C headers in that dump is the cherry on top.

I'll admit I'd still rather have an NX500, I just bought the NX300 because I'm cheap :)

[0]: https://gitlab.com/dvdkon/pahil