After updating the firmware of my SmartSolar MPPT 100|20 (0xA05F) from v1.50 to v1.53 I have the following issue with the solar charge controller: every 24 hours at around 17:30 the load output automatically turns off for a short moment, leading to a sudden power outage for my off-grid system's loads (LTE router etc).
I don't know if the charge controller just performs a restart, or if only the load output is toggled. This never happened with former firmware versions.
Other than the firmware update nothing was changed on the setup at that time. BTW, the update was performed on 25.10.2020 at 15:47, and on the very same day at 17:35 the first load output outage happened. And from then on every 24 hours, every day.
There are no loads with high inrush current connected, the actual load is well below 1A at that time, no load is switch.
And it seems that I'm not the only one with this issue (see another Google Play review on 28.10.2020).