Extract all files directly to the root directory of the MicroSD card.
No official recall, but internal service bulletins (SB-530-2023) acknowledge "thermal performance issues following v2.1.3 update."
If the unit remains hot after a software update, check the wiring harness for a short circuit or verify the ground wire is securely connected to the chassis. 4. Technical Specifications for Firmware Known Working Versions: MCU: V0.56, MPU: 133.166.V1.91_140619, OS: V2.03-02. Supported Modules: MTK (Bluetooth), NAV (Navigation). device.report
If your device is currently running hot after an update, follow this triage guide.