BOOX Palma 2 · KOReader
Install KOReader on the BOOX Palma 2
Install KOReader from the Play Store or an APK on the Palma 2, then set its BOOX refresh mode, grant storage access, and map the volume keys to page turns. No jailbreak.
On the Palma 2, KOReader installs like any Android app — no jailbreak. Grant full file access so it can find your books, let KOReader manage e-ink refresh itself, and map the volume rocker to page turns inside KOReader so you can read one-handed the way you would in the stock reader.
Before you begin
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Install KOReader
Open the Play Store, search for "KOReader", and install it. If you prefer not to use Google, download the "koreader-android" APK from the KOReader releases page in the device's browser and open it to install; allow "install unknown apps" for the browser when prompted.
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Open KOReader and grant file access
Launch KOReader. On first run it asks for permission to access storage — grant it, and if Android shows an "all files access" toggle for KOReader, turn that on too.
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Point KOReader at your books folder
In KOReader, open the file browser (top-left menu) and navigate to where your books are — "Books" or "Download" in internal storage, or the microSD card. Long-press a folder and "Set as home directory".
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Set KOReader's BOOX refresh mode
Leave KOReader, open its BOOX optimisation panel, and set its refresh mode to HD or Regal. Turn off any BOOX "app-level full refresh" setting — KOReader manages its own.
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Set KOReader's own refresh inside the app
Back in KOReader, open the top menu, then the gear, then "Screen", and set "full refresh every N pages" (every 1 page is cleanest, every 6 is a compromise).
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Map the volume keys and tune the gestures
In KOReader's "Taps and gestures", then "Physical buttons", map the Palma 2's volume keys to next and previous page. Because it is a one-handed device, also check the tap zones and edge swipes are reachable with your thumb.