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Flash guide · Method 3 of 5

Unlock a Locked Xteink X4 or X3 (OTA Unlocker)

~10 min Easy Locked X3 & X4
YouTube tutorial: Cómo instalar CrossPoint en Xteink X4/X3 — 6,700+ views
Community tutorial (6,700+ views) — watch on YouTube

What the OTA Unlocker does

The OTA Unlocker turns your computer into a local hotspot. When the Xteink checks for updates over WiFi, it connects to your hotspot instead of Xteink's servers and receives CrossPoint or CrossInk. The device installs it as a normal OTA update. Important: only CrossPoint and CrossInk are supported this way — Papyrix and other firmware cannot be installed on locked units.

Steps

  1. 1

    Normal OTA (already unlocked)

    Settings → System → Check for updates — pulls the latest GitHub release automatically.

  2. 2

    Locked units

    Download the CrossPoint OTA Unlocker (macOS/Windows/Linux/Raspberry Pi) from crosspointreader.com/unlocker.

  3. 3

    Run the Unlocker

    Run the Unlocker on your computer. It creates a local WiFi hotspot.

  4. 4

    Connect and update

    On the device, connect to that hotspot via Settings → WiFi and trigger a system update.

  5. 5

    Note on USB flashing

    This does NOT re-enable USB flashing — you'll flash future firmware via the in-app SD update path or by re-running the Unlocker.

Troubleshooting

Device can't see or connect to the hotspot
Disable your computer's firewall temporarily, or add an exception for the Unlocker app. Make sure the device's WiFi is enabled.
Update check fails / stays on stock
The Unlocker must be running and the hotspot active before you trigger the update check. Try again from Settings → System → Check for updates.
Only CrossPoint and CrossInk are available, not Papyrix
By design. Locked units can only receive CrossPoint and CrossInk via this method. Once CrossPoint is installed, use its in-app SD update to install other firmware.
Hotspot appears but device can't download
Try moving the device closer to your computer. Check that no VPN is running on the computer during the process.

Still stuck, or hit a different error? Browse every fix in the Xteink firmware help & FAQ — searchable by problem.