hello everyone,
i encountered with the error
not in sync: resp=0x58
I am not getting the meaning of this.So please do help
I can't help you but one of the things that might be important for this type of problems is the IDE version and the OS that you are using as well as the Arduino model (Uno, ...) and if it's a genuine Arduino or a clone.
Also please check information in the below threads
Please check the troubleshooting guide before posting here.
Loop-Back Test Instructions