Use the original Toyota SD card that came with your unit or another Toyota SD card of the same size.
Introduction: The Black Box Under Your Dashboard The Toyota NSDN-W59 187 (often found in European and Asian market Corolla, Auris, C-HR, and RAV4 models around 2016-2019) is a marvel of automotive integration. It runs a heavily modified, locked-down version of Windows Embedded Automotive or a proprietary QNX-based system. When it works, it's seamless. When it fails—boot looping, stuck on the "Toyota" logo, or displaying a "Navigation System Malfunction" error—the dealership's only solution is a $3,000+ replacement. Bootable SD-card for TOYOTA NSDN-W59 187
But there is a backdoor: .