The stereo will detect the update files on the USB. Select the USB option and press OK .
Use a recovery pin to reset the device or use the PhoenixCard tool to create a bootable repair drive. Quad-core T3 P1 Update Download
Properly formatting your storage media is critical for the car stereo's operating system to read the installation files. The stereo will detect the update files on the USB
Scroll down to System Update or MCU Update . Quad-core T3 P1 Update Download
Because these devices do not support Over-The-Air (OTA) updates, files must be manually downloaded to a computer first.