Open the UCCW app, go to Settings > Backup/Restore, and select the downloaded skin file to import it.
Long-press on your home screen, select Widgets, and choose a UCCW widget size. Select the imported skin from the list. Signing an APK Download uccw495 sign apk
Use a tool like apk-signer from the Google Play Store. Open the UCCW app, go to Settings >