In /logs/firmware/unblob_extracted/firmware_extract/56048-12514271.gzip_extract/gzip.uncompressed_extract/5243916-15068666.gzip_extract/gzip.uncompressed_extract/etc/init.d/S00nanddisk line 17:

	if [ $? -ne 0 ]; then

             ^-- SC2181 (style): Check exit code directly with e.g. 'if ! mycmd;', not indirectly with $?.

In /logs/firmware/unblob_extracted/firmware_extract/56048-12514271.gzip_extract/gzip.uncompressed_extract/5243916-15068666.gzip_extract/gzip.uncompressed_extract/etc/init.d/S00nanddisk line 25:

		if [ $? -ne 0 ]; then

                     ^-- SC2181 (style): Check exit code directly with e.g. 'if ! mycmd;', not indirectly with $?.

For more information:

  https://www.shellcheck.net/wiki/SC2181 -- Check exit code directly with e.g...