error copying files after rooting I rooted my micromax a27 a few days back. It installed an app Kinguser to give root permission.

Earlier it was working fine. 

I did a factory reset last night.

Now, when I try to copy file to root folders like /system/media/ directory. It gives error as Permission Denied.

Please help how to recover root access.

I am using ES explorer with root access enabled.
In es file manager, slide the menu out and tap on "root explorer" (not the switch) and choose mount rw. Then tap on the radio button in the rw column for all rows. Now you should be able to write to those partitions.