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M559: Upload file
- P"filename". File name to upload to. In RRF 3.1 and earlier, the default filename is config.g. In RRF 3.2 and later there is no default filename. If the filename does not include a path, the default is /sys. Quotation marks around the filename are mandatory in RRF 3.2 and later.
- Snnn File size for binary transfer. If not present, the transfer is terminated by a M29 command
- Cnnn CRC-32 of the file (optional)
- M559 P"config.g"
Was used by the original web interface to upload a configuration file. Can now be used to upload any file.