Unable to update NDIR vAir - CO2 Monitor FW

[Peter de Vries]

Hi,

I am trying to update the firmware of my NDIR vAir - CO2 Monitor to the latest version.
However I get the following error:

vAir found on : COM3
received:vAir CO2 Monitor: v1.9.3
Visit 'vair-monitor.com' for configuration details

sending: proxy
received:proxy
ESP Proxy

received:‚‚ò—=‡>ŠIЇÿþ
vAir - WiFi Module v1.6.1
ready
Waiting for auto-connect

received:IP address: 192.168.1.102 in 4033 ms
GOT IP

sending: otah
received:Starting Web update, mode 1

received:HTTP_UPDATE_FAILED
>

Tried it a couple of times.
Any idea what's going wrong?

Kind regards,

Peter