I want to delete the APK of the UC browser that comes with the system, remount failed: operation not permitted

Http://www.eoeandroid.com/thread-148388-1-1.html

 

I want to delete the APK of the UC browser that comes with the system. When I run ADB remount on the terminal, the command terminal displays Remount failed: operation not permitted ADB remount failed. 1. Check whether the phone is correctly connected. ADB Devices 2. Go to Shell ADB Shell 3. Enter the command in Shell (the # At the top of the command does not need to be entered) # Su # Mount-o rw, remount-T yaffs2/dev/block/mtdblock3/System # Chmod 777/System # Cd System # Chomd 777 app # Cd app # Chmod 777 ucweb.apk # Exit 4. Then you have the read and write permissions for the APK file (or system directory). For example, you can use ADB push to push the file to the system directory or delete the system file.