GT-N7105T - Stuck in Factory Mode help topic

Hi Everyone,

I'm hopeless at Forums so please direct me if there's something here to assist.

I got my Samsung Galaxy Note 2 off a friend who did a factory reset before giving it to me. For whatever reason the phone is now in Factory Mode and won't exit. I'm getting the same black box and yellow writing on my screen as this thread:

http://forum.xda-developers.com/gala...creen-t2071052

I have Rooted my as per the following thread (which I'm pretty sure linked off this forum)

http://www.ibtimes.co.uk/root-galaxy...rmware-1448702

I get to the step where I have to change the efs/FactoryApp/FactoryMode from ON to OFF however I get a '! Could not save file, Access Denied" message. Have I missed anything?

I'm using Root File Explorer and Text Edit to do the job.

Model Number: GT-N7105T
Android Version: 4.3
Kernel Version
3.0.31-2138564
dpi@DELL147 #1

Build Number: JSS15J.N7105TDVUEMK2
SE for Android Status: Enforcing SEPF-GT-N7195_4.3-0010

I'm lost. I'd like to get it out of Factory Mode so I can use some of the key stuff like the lock screen for one!.

Let me know if I'm on the right track. I've tried clearing the cache and restoring to factory settings a few times and not working.

Appreciate your help and guidance.