Add the file you’ve just downloaded to the USB flash drive.
Note: Alternatively, you can download this file directly to your WP600A/ WP600ACG: access the built-in browser -> go to this guide -> download the file -> click on the downloaded file and proceed with the installation.
In this case, a USB flash drive is not required and you don’t have to proceed with Step 2 of this guide.
Step 2. Install the update on WP600A/ WP600ACG
Connect the USB flash drive to the WP600A or WP600ACG and restart the phone.
After the restart, navigate to Apps -> Explorer -> USB.
Select the downloaded .apk file.
Press Install on the screen that appears.
Once the installation is complete, press Done if you want to simply close the screen, or Open to go to the app.