Can't update GHL Doser 2.1 Slave

[goldo26]

Hey, when I try to update my GHL Dosers 2.1 Slave from 1.40 to 1.45, the update cannot process. I do every step correctly in the installation from the tutorial posted in GHL. In the step 5/5 pops up a window that GHL needs to go to bootloader mode, when I press OK the Doser turns off and the update automatically finishes but the version is still 1.40. Any help, tips would be appreciated. Thanks.

[Gael]

Hello,

You need to write good port COM number in window.
When go ti bootloader mode, GHL Communication COM port is replaced by USBVCOM COM port.
USBVCOM COM port number is nor same as usual COM port.
For that you need to watch in Device Manager.

Our KB article:
https://www.aquariumcomputer.com/knowledge-base/how-to-update-standalone-doser-firmware/

Also USBVCOM must be OK in device manager:

https://www.youtube.com/watch?v=P33rmGvw53g

Gaël