Help!! I've been trying to change the gEnableSuspend file back to 2 but ES File Explorer keeps telling me that an error has occurred and it won't save it. Since I flashed the newest rom my Wifi goes out after a while of not using and it seems to drain my batter a lot. Can anyone help me out please? Am I trying to change the right file?
You don't want to change the file back to 2. If you do that, your wifi will disconnect whenever your screen goes to sleep.
However, if you really still want to change it, in order to save the file, you will need to mount your file system as read/write. To do that, go into the ES File Explorer settings and check the boxex for Root Explorer and Mount File System and give it root access when you get asked.
You should then be able to edit the system files and save them back.
As for your original issue, have you tried setting your wifi to never sleep in the advanced settings in the wifi settings? Try that first to see if it helps.