MicroSlate
A dedicated writing firmware for the Xteink X4 e-paper device.
Pairs with any Bluetooth keyboard. Saves notes to MicroSD.
Disclosure: This page contains affiliate links. If you buy through these links, I may earn a small commission at no extra cost to you.
Xteink X4 E-Paper Device
The e-ink device MicroSlate runs on. Pocket-sized, distraction-free, and easy on the eyes during long writing sessions.
Buy on Amazon →
Logitech Keys-to-Go 2
The slim Bluetooth keyboard that pairs perfectly with the X4. Lasts months on a single charge — fits in the same pocket.
Buy on Amazon →Install firmware
Installs MicroSlate directly onto your Xteink X4 over USB. Works on Windows and Mac.
- 1 Connect your Xteink X4 to your computer with a USB cable.
- 2 Click Install MicroSlate below, then select the device from the browser popup.
- 3 Wait for the flash to complete (~2 minutes), then restart the device.
After flashing
- Insert a FAT32-formatted MicroSD card.
- Power on — the device boots to the main menu.
- Go to Settings → Bluetooth and scan for your keyboard.
- Select your keyboard and press Enter to pair.
- Return to the main menu and start writing.
Source code and release notes on GitHub.
Dual-Boot Edition
MicroSlate + CrossPoint on one device. Switch between apps from the menu.
Install dual-boot firmware
Flashes both MicroSlate and CrossPoint onto your Xteink X4. Each app's menu gains a one-tap switch to the other.
- 1 Connect your Xteink X4 to your computer with a USB cable.
- 2 Click Install Dual-Boot below, then select the device from the browser popup.
- 3 Wait for the flash to complete (~2 minutes), then restart the device.
About the CrossPoint included in this build
The CrossPoint bundled here is a fork of the CrossPoint e-reader project, forked as of April 2026. It is not the official CrossPoint release.
I pull upstream updates occasionally, but this fork will always lag behind the main project. If you want the latest CrossPoint, flash it directly from the official CrossPoint repo.