It’s working on my old Note 4, with Marshmallow. The Note 2 is stuck on Kitkat 4.4.2, at least concerning official roms, so maybe it’s some incompatibility between Magic Dosbox’s newer build versions, and the outdated OS version of the Note 2?
Shame I don’t have my Note 2 anymore, it was a great device. Its 1.6 GHz Exynos cpu was faster than the Note 4’s 2.7 GHz Snapdragon. So in case you’re thinking of an upgrade, only buy an Exynos device. These things are incredible for emulators like Magic Dosbox. 🙂