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Firmware

Cardputer

M5Stack Cardputer / Stamp-S3A · ESP32-S3 · 8 MB flash

Download .bin

Chain-load with Launcher, or flash to offset 0x10000.

Android

Android 8+ · arm64

Download .apk

Enable Install unknown apps for your browser, then open the file to install.

macOS

macOS 10.14+ · Apple silicon & Intel

Download .zip

Unzip and drag Nexo.app into Applications. First launch: right-click → Open.

Checksums & older versions

Verify your download against SHA256SUMS, or browse previous releases on GitHub.

SHA256SUMS All releases

Installation

Launcher: copy Nexo-m5stack-cardputer.bin into the Launcher apps folder on the SD card.
Raw flash: write the image to offset 0x10000 with esptool or PlatformIO.

Copy MP3/WAV files into the /music folder of the SD card (or upload them from the app over Wi-Fi).

Pair over Bluetooth, enter the device PIN, and Nexo syncs your notes and homework automatically.
The app checks GitHub Releases on launch and can update itself.