If you use ifunbox to modify it, you must escape from prison. Go to ifunbox to find the program you want to modify, then click in to find info.plist, and then open it with notepad or plist editor to find < key & gtcfbundledisplayname & lt/key >

& lt string & gtXXXXXXXXXX & lt/string & gt；; Then modify XXXX there. Icon replacement depends on the program, and the icon file to be replaced varies from program to program. It is recommended to use ibeautiful for one-key replacement.