Herelink Firmware update requires product key

I have a Herelink system, and I am attempting to update the firmware. During the update process, the system requires a product key for registration/activation, which I have unfortunately lost. I no longer have the original box or any documentation with the key printed on it.

To help verify my device, here are the details:

  • Serial Number (printed on the device): HX4060756800134

  • Additional Serial (from Controller Settings > About Phone > Status, ): 664499e8

I would greatly appreciate it if anyone could provide me with the original product key associated with this serial number so I can complete the firmware update.

Thank you in advance for your assistance. I look forward to your prompt response.

Best regards,