HOW TO: How I SIM unlocked my N7105, Includes downgrading to 4.1.1 and 4.1.2 insts
How to SIM unlock and/or roll back firmware on Samsung Note 2 N7105.
This is how I
did it. It worked for me. That's all I can say. It may or may not work for you. I'm no 'expert' so I can't answer any tech question. I found this by trial and error. None fatal. ( So far) I will take it for granted you know how to Root and use Odin. I'm also assuming you have installed the Samsung USB Drivers.
If you are using one machine to do this remember to disable Kies
before using Odin.
My phone was updated to 4.3 using Kies
. I did this on my laptop as I didn't want Kies
messing up anything on my computer that I was going to use for the rest of the process.
So stating with a stock phone.
I rooted my Phone with
I then downloaded SuperSu
from the market and ran that. It runs a fix to stop Knox.
I then installed ES File Explorer
from the market.
Then I downloaded My Phone Explorer
. I like this program and use it a lot.
I backed up my EFS
folder to my Sd Card
I backed it up again to my computer.
Better safe than sorry.
I then used Odin
again to install the 4.1.1 Firmware.
I got it from here. There's 4.1.2 there as well for those that asked.
I then installed 4.1.1 by unzipping the file and using Odin
I then use CF-Root
Using the *#Codes as below
Step 1. Insert a SIM on your Note 2, you should find the familiar “SIM network unlock PIN” window.
Step 2. Dial “*#197328640#” on your Note 2 to enter special menus.
Step 3. Choose “UMTS”.
Step 4. Next choose “Debug screen”.
Step 5. Choose “Phone Control”.
Step 6. Choose “Network Lock”.
Step 7. Choose “Perso SHA256 OFF” and wait about 30 seconds.
Step 8. Press the Menu button then choose “Back”.
Step 9. Choose “NW Lock NV Data Initiallize” and wait about 1 minute. *Then reboot your Note 2.
Step 10. Once rebooted, you should no longer get the Network Lock window any more and you should be able to get signal and data. *If you have trouble getting 3G/HSPA+ data, try setting the APN to your carrier’s settings although it should set automatically.
I did try this using 4.1.2 but Step 7 was missing.
I then updated back to 4.3 using Kies
on the laptop and then CF-Root
again through Odin
on my computer. Fixing Knox by re downloading SuperSU
and running that.
One SIM unlocked phone.
I then used Titanium
to freeze all the Samsung and Google stuff I didn't want and also froze Knox.
MY phone is running stable and good. Auto update though says it has been modified so now it will not OTA. Which isn't a bad thing.
Thank you to the respective developers of the software I used.
I hope this helps others.