Duet

Open-source reading-first firmware for Xteink X3/X4 e-readers

Desktopfree

Duet is open-source, reading-focused firmware for the Xteink X3 and X4 e-ink devices, adding device-to-device sync with no server or account, detailed reading analytics with customizable dashboards, an SD-card font system, StarDict dictionaries and achievement tracking. The project is in early alpha and under active testing on physical hardware. It is aimed at Xteink owners willing to flash alpha firmware for more reading features.

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