This firmware is typically associated with , embedded Linux gateways , network-attached storage (NAS) devices , or telemetry modules manufactured by mid-to-large scale OEMs. The ptc01 tag strongly suggests a custom branch for a specific hardware accelerator or programmable logic controller (PLC) interface.
ptc01-diag --all
If the update is available for your specific hardware revision, a "Download" button will appear. Support Request If your device is stuck in a boot loop and you need the file for a manual SD card flash, you must contact EZVIZ Support with your device's Serial Number (SN) Verification Code v5.2.1.37-en-ptc01 firmware download
It fixes "reboot loops" and "SD card not detected" errors common in earlier v5.x builds. Where to Download v5.2.1.37-en-ptc01 This firmware is typically associated with , embedded