supporting devices with up to 4 GB RAM was made available in April 2021.

OpenAtom Foundation added a UniProton kernel, a hardware-based Microkernel real-time operating system, into its repo as part of the Kernel subsystem of the OpenHarmony operating system as an add-on on August 10, 2022.

On September 15, 2025, OpenAtom Foundation stated on the developer notice board that they have officially migrated the OpenHarmony open source code to Gitcode

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