[Galaxy S6 Q&A, Help & Troubleshooting] The..King:
Hi all,

My device: Samsung Galaxy S6 (SM-G920F running 6.0.1)

So I've been dealing with Samsung tech support for the last week and believe it or not, things have just gone from bad to much, much, much worse. I am now completely & entirely locked out of my phone (which is running stock firmware).

Background: I wanted to change my Samsung account details (that I've had for nearly 10yrs) from an old email address to another new email account I had. From a combination of reading a few forums & following instructions throughout the actual process on my phone, it turns out that I obviously mad a bad choice. Long story short, I eventually got back to normal and had full access to my phone again, but under 'Settings' > 'Lock screen & security', my 'Reactivation lock' was now enabled (even though I hadn't changed or updated any firmware - only changed my samsung account) and I couldn't slide it to 'off' - even with my correct Samsung Account details?

From speaking to Samsung tech surrport, they said that the changes made to my Samsung email address most likely corrupted some protected file (boot file perhaps, I don't know) and that maybe a trace of my original Samsung account was still on the phone somewhere and now that I was after trying another - they conflicted and were causing me problems. In short, the tech guy said that "the problem is embedded in your software and you will need to do a full factory reset".

The problem (as I explained it to him) was that even with my correct Samsung account details (which he could verify because he remote connected to my phone), (a) I couldn't disable 'reactivation lock' before any factory reset and (b) I couldn't remove the existing Samsung account from my phone before doing so either. I even tried logging onto findmymobile.samsung.com on my PC (which I could do no problem) and tried to disable reactivation lock, but again - it wouldn't allow me to, it just kept sliding back to the 'on' position? The tech support guy proceeded to do an 'emergency recovery & initialization' via the Smart Switch app to reset my device, but now I'm stuck at the initial setup screen (select language, WiFi, etc. and then it comes to my Samsung account details and now it says; "this device is locked because of an abnormal factory reset, etc." However, here's the stickler that even has Samsung tech support baffled........ Despite knowing my samsung account credentials (email address & password), it keeps telling me "processing failed". Whether I try the new details or the old/original ones, I get the same 'processing failed' message! As above, I am assuming this is because there is corrupt Samsung account info in some protected boot file or something, because of two different Samsung accounts I used.

As I am locked out, there is not much I can really do to resolve this. I have researched a lot and I have two queries I am hoping some genius here knows about. (1) Is there not a way to obtain and flash a complete set of original 'everything' to my phone in download mode? (i.e. availing of the 'BL', 'AP', 'CP', 'CSC' functions within Odin?) I am used to inputting files in AP for flashing .tar files for either custom stuff or original firmware, but I have never messed with any of the other options and don't even know where to find the files to put into each 'field' if it was a viable option. If this method is not a way of completely wiping my phone back to the day it came out of the box, what is the method to do this? (2) I have come across a thing called GSM Flasher while doing some research. Not the standalone FRP remover tool which I tried but doesn't work, but the full suite tool. i.e. The one with the cat wallpaper which has Miracle 2.27A, Eagle Eye 2.27A, Aladdin v2 1.34 & 4SE 2.0.4. To the untrained eye, this looks like it could do practically anything to recover any phone, but I am finding it quite hard to come across a decent instructional website or video (in English) on YouTube and/or to determine if it will work and do the job?

Has anyone any ideas about how I go about getting into whatever boot or protect files there are on my phone (that a factory reset doesn't touch) and a way to remove everything and then replace it with original stuff so that I can get ride of this corrupted samsung account issue?

Would really appreciate if anyone who has more know-how than Samsung tech support can weigh-in with some help.

Thanks in advance.