If the mt manager does not have main, the solution is to add the main program. According to the query of relevant information, the mt manager does not have main, which will cause the program to be unable to be executed. It is necessary to add the main program according to the purpose of the program so that the program can be executed. After the problems are eliminated, appropriate changes need to be made to the program for completion. MT Manager is a powerful file management tool and APK reverse modification artifact. The software has functions such as Chinese application, resource replacement, layout modification, logic code modification, resource obfuscation, and signature verification removal.