There is OTA support in ZHA only for IKEA, LEDVANCE/OSRAM, SALUS/Computime, and INOVELLI devices.
But I like to have updates for LIDL devices as well. But where to get them?
I wrote to the LIDL service an email, because I had problems with there zigbee devices. But they simply wrote, what they can guarantee that there products work with all other zigbee gateways. I should use a LIDL gateway…