Hi there. I am having some serious issues. Let me preface this with stating clearly that I am a complete noob when it comes to rooting. This is the first time I’ve ever tried to root.
I have a Exynos Note 9 model SM-N960F/DS. I live in the US. I have a working T-mobile sim (still works in my old phone).
Out of the box I took my old sim and put it in the phone and was able to make and receive calls, text messages, if I walked out of the house for better signal. However, I did not see any settings for Wifi calling (searched the settings area) and confirmed based on my research it would never work stock. Hence my decision to root.
It’s a little hard to retrace my steps but I will try to let you know where I stand now.
I bought the phone on eBay unlocked. In my area the cell signal is terrible and I am dependent on TMO WiFi Calling at home (I can use Skype for outbound but I hardly ever get inbound calls without it).
In order to get Wifi working I found a link for TekHD’s Detonator flash for the Note 9 (specifically to enable features like Wifi calling, etc.) here:
I rooted (so I thought) the phone using this guide (before I found your video) and it seemed like it was sort of working. Root checker (the app) showed that root access was working. I installed the Detonator flash (copied it to the sd card, installed it using TWRP\ making sure to be in read-only mode).
When I booted the phone all seemed ok - I got the T-mobile splash screen, OS loaded, but then I noticed my IMEI information disappeared and therefore my sim was not working. I also noticed that Titanium backup did NOT work and failed to obtain root access.
Fast forward a little bit I tried reloading a stock ROM from LUX using a rom I downloaded with Sam Firm. I picked that rom based on a post on xda-developers forum but I can’t find the link atm. Anyways I punched in SM-N960F for Model and region I input LUX. I was confused by Tekhd’s instructions and thought I had to reinstall an international ROM.
When I reinstalled this using Odin, my imei information came back automatically but then the t-mobile splash screen, etc. all disappeared and the most troubling part is when I inserted my sim card I got an error saying
“Network pin blocked. Enter sim network PUK” the minute the OS loaded. The IMEI informatio was correct as I compared it to the sticker on the phone.
Somehow I managed to get it into a boot loop but managed to get out of it by going into download mode, reinstall the stock LUX rom, and now I’m back in the OS with no sim card and no connectivity but correct IMEI.
Now, if I try to go into download mode and root the phone again following your video, after using TWRP to install the N9_S9_Root_for_OEM_issue_devices_V5.zip, when I reboot it just goes into a boot loop. I see the Samsung Note 9 splash screen, then it will vibrate and reboot continuously in a loop.
Developers options is ON, OEM unlcok is ON and says Bootloader is already unlocked, and USB Debuggin is ON. The only way for me to get out of the boot loop is to quickly get into Download mode and reinstall the stock rom.
In Download mode I did notice it says “Warranty Void: 1”.
I tried at some point to make a backup using TWRP of everything (which failed on data) so I tried again with data unselected.
I think I need to be able to backup the /efs/imei directory but it is showing empty when using Terminal in TWRP.
Any help is greatly appreciated. Thank you in advance.