According to the feedback, Pumpkin AL/12 series Android 4.4 head units' (AL-C0241, 12-C0252, 12-C0257) radio app has issue with the system update. If you switch to year 2015, then they will work without problem. But now, we have released the new radio app to fix this issue. Here's the guidance:

Step 1:
Download the new radio app and copy it directly to your USB drive:

download the new radio app


Step 2:
Insert the USB drive into your Android head unit and click the ES File Explorer -> Local -> usb_storage. And then install the new radio app and it will replace the old one.

Es File Explorer