
When upgrading the firmware of the industrial AI edge gateway via OTA, it supports synchronous updates of bundled AI model files. During the update process, it is crucial to ensure that the Flash write is not damaged by power interruptions. A 2200μF capacitor and a TVS 5.0 SMDJ33CA are connected in parallel at the power input. Simultaneously, an SMD2920-050-60V self-resetting fuse and a PBZ1608E600Z0T ferrite bead are connected in series for filtering. ESD protection (0524P) is added to the USB upgrade port. In actual testing, 50 upgrades were completed with a 100% success rate and error-free model loading.