- "fit") nand_upgrade_fit $1;;
- "ubi") nand_upgrade_ubinized $1;;
- "ubifs") nand_upgrade_ubifs $1;;
- *) nand_upgrade_tar $1;;
+ "fit") nand_upgrade_fit "$1";;
+ "ubi") nand_upgrade_ubinized "$1";;
+ "ubifs") nand_upgrade_ubifs "$1";;
+ *) nand_upgrade_tar "$1";;