Before the serial number is set, u-boot env partition (where serial number is loaded) is empty. An empty partition does not match with the error correction scheme. Therefore the above warning is thrown. It does not harm serial number saving or reading.
Before the serial number is set, u-boot env partition (where serial number is loaded) is empty. An empty partition does not match with the error correction scheme. Therefore the above warning is thrown. It does not harm serial number saving or reading.