In contrast to stock Weedo X40 firmware, you can now use the backup function to save all important configuration parameters from the printer to the MicroSD.
Use the backup before every firmware update and you won't lose any more important settings.
You can also open the backup file with a text editor and modify it if necessary. If the entry is correct, the modification can also be imported into the printer
More informations see:
http://www.x40-community.org/index.php/firmware/x40-pro-firmware