Tap several time in the “Build number” entry, until a message “You are now in developer mode” appears
Go back to the settings menu
Go into the “System” entry
Go into the “Advanced preference” entry
Go into the “Developers options” entry
Check “USB debugging”
Install ADB
For your computer, install “adb.exe” from Google
Connect the tablet to your computer via USB
On the tablet, confirm that you want to debug the tablet
Verify the CPU architecure and the pixel density of the tablet
Do the following ADB command : adb shell wm density ; uname -m
It will reply something like Physical density: 160 ; aarch64
Download an APK
Use a trusted APK source to download the APK you want to install
For example, go to https://apkcombo.com/fr/downloader/#package=com.dragonbox.School&device=tablet&sdk=29&arches=arm64-v8a&dpi=160&lang=fr to download the APK of “Login Access: DB Les Noums” for the aarch64 with 160dpi in French.
Or use the official APK from the editor https://assets.dragonbox.no/2024/Software/DB_School_2024.0.5.150.universal.apk
If the APK is in XAPK format, unpack every APK that are inside the XAPK
With the previous example, you will find inside the XAPK, the following files : “com.dragonbox.School.apk”, “config.arm64_v8a.apk” and “UnityDataAssetPack.apk”
Push the APK
Use ADB to push the APK by using the adb install or adb install-multiple command.
For example, with the previous APKs, use the following command : adb install-multiple com.dragonbox.School.apk config.arm64_v8a.apk UnityDataAssetPack.apk
If the APKs is large (several MB), wait a few minute.
Profit !
The application is now installed. By default, it is not on the main desktop, you will find it under all the existing applications.