I am not able to get the SETSYSTEM 252, 0 working properly. It does not back up the data variables. In the documentation, it states the following:
Nano-10 allows you to do so easily using a single SETSYSTEM command, as follow:
SETSYSTEM 252, 0
Upon execution of the above command, the Nano-10 CPU will erase a special flash memory area used to
backup the pseudo EEPROM and it will then copy the entire pseudo EEPROM memory data to the flash
memory