I followed the zniffer guide by @codahq to create a zniffer. I needed to use the UZB3 (ACC-UZB3-U-STA) as a Secondary Controller to include my Zooz 4-in-1 without S0 security and used the following steps to successfully convert from a zniffer back to a Zwave Controller:
The following procedure is to be done at your own risk:
- Open the "Z-Wave Programmer" software.
- Under the "View" menu make sure "ZW050x" is checked
- Under the "Tools" menu click "Detect Target"
- Under the "Settings" menu make sure to select the COM port with the UZB3
- Flash the Zniffer firmware to convert the UZB3 stick from a controller to a Zniffer.
- This is done by clicking the "ZW050x" tab
- In the HEX File field select the serialapi_controller_static_OTW_SD3503_USBVCP_US_WITH_BOOTLOADER.hex file from the SDK_v6_82_01\SD3503\ProductPlus\Bin\SerialAPI_Controller_Static folder.
- Click "Program and Verify". This step took aprox 35 minutes for me. Don't panic.
- If it says successful you're done!
Edit: (6/26/2021)I only flashed a few times between firmware versions. Mine died today trying to flash back to use as a zniffer. I would recommend a second stick and not flashing multiple times.