JLB Software

Get the JLB app

Free to install; you license each tablet with a key. These steps are written for the Redmi Pad SE on HyperOS, but apply to most Android 13-15 tablets.

Open this page on your Android tablet, or scan the QR code below, to install.

JLB Charge Protection

The JLB Charge Protection app for Android tablets. License each tablet with a key.

Download APK
Version
2.1.9-charge-jlb
Size
26.5 MB
Min Android SDK
24
Target SDK
37
Updated
2026-08-25
Installs on Android 13, 14, and 15.
Scan to open on your tablet

For staff: bulk setup

Setting up more than one tablet? The desktop tool does the install, kiosk lock-down, and relay flashing over USB.

JLB Provisioning Tool

Desktop app for setting up tablets in bulk: install the Charge app, make it the device owner, copy an app set between tablets, and flash the Charge relay board.

Download for Windows Download for macOS
Version
1.4.2
Windows size
23 MB
Updated
2026-08-25
The installer is not code-signed yet. Windows SmartScreen will warn you once — choose More info then Run anyway. On macOS, right-click the app and choose Open the first time.

Install on your tablet

  1. 1

    Download the APK

    Tap the download button, or scan the QR code with the tablet to open this page there and download directly.

  2. 2

    Open the file and allow this source

    Open the downloaded APK. When HyperOS asks, allow installs from this app (browser or Files). On HyperOS this permission is per-app, not global.

  3. 3

    Dismiss the unknown-app / Play Protect prompt

    Google's package installer may warn about an app from an unknown source or offer to scan it. Choose to install anyway (or 'Install without scanning').

  4. 4

    If install is blocked by MIUI optimization

    If HyperOS blocks it, open Settings > Privacy protection > Special permissions > Install unknown apps, pick your browser/Files app, and enable it. Then retry the APK. You can also turn off 'Scan apps before installing' under Security if it keeps interrupting.

Re-installing a newer version over the top keeps your data — the apps are signed with a stable key. Once installed, open the app and enter your license key to activate. Need a key? Request a license.