I Accidentally Deleted the Launcher I was making some tests on my android phone and I accidentally deleted the launcher from the system partition and I forgot to copy the new one to the system partition again, and the phone doesn't show anything, just the status bar and I can't enter or run anything. 

I tryed to send the launcher's apk using bluetooth, but neither other android phone nor windows 8.1 can't send any file to the phone, even if the phone is paired with both devices.

Is there any way to run the Play Store to install the launcher or to install the launcher from the SD card?

Thanks a lot.
You can find a launcher on the Google Play Store and remotely install it that way. Then reboot the phone after it installs. Once the phone reboots it should prompt you to pick a launcher and then you can go from there. 

So for instance if you want the Google Launcher.

Then click on the Install button and select the device. As long as the device is online and signed into your account, it will install for you automatically.

Edit. Forgot to say this. You can do this from another device, just have to do it through the browser and not the app. Or since you said Windows 8.1 I assume thats a desktop/laptop. You can do it on there as well.

Edit 2. Adding on what @Izzy commented. You can download the apk for google's launcher from here. Then sideload via adb, using the command adb install &lt;/folder/nameof.apk&gt;.