Dear Sir/Madam,
Thanks for contacting Milesight IoT support.
The firmware can be found on https://www.milesight.com/support/resources/firmware.
For UG56, please check https://www.milesight.com/support/resources/firmware#lorawan-gateway.

For UC511, please check https://www.milesight.com/support/resources/firmware#irrigation-controller.

Hope this helps.
Have a nice day.
Best regards,
Beck
Chiara Tecnoelettrica
Dear Sirs,
we've looked at https://www.milesight.com/support/resources/document-center
But only datasheets and user manual are available.
Is there a "reserved area" anywhere, how do we check if there's upgrade available
(right now need to check for UG56 and UC511 )?
Thanks, Best regards