On your PC, download the latest versions of these three APKs (search for "Google Play Services APK" and "Google Play Store APK" on APKMirror). Make sure they are for Android 4.2.x (Jelly Bean) , as Droid4X runs on Android 4.2.2.
The most effective fix is to bypass the online installer entirely. how to fix droid4x request download url failed work
Locate and click on (or the Droid4X Market ). Click Clear Data and Clear Cache . On your PC, download the latest versions of
⚠️ : Old executables may contain unpatched vulnerabilities. Run in a VM or sandbox. On your PC