yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Note 8 Questions and Answers] ravian29:
I am sorry to say, there is a lot of misconceptions involved in this OEM thing, few are trying to change setting storage values to enable it which is really childish step. Android has now gone more secure and hard to modify. Xposed is another big example, anyway let me tell you few more correct thing which i observed in very limited time (still coping up with new job)

The correct logic Samsung implemented is, when phone boots up it posts an request to an ip address to check the OEM status and Samsung nominated server responses accordingly. Anyone with OEM unlock shown can confirm this by disabling all internet connections and reboot after phone boots up check there will not any OEM unlock. Now try enabling internet connection and reboot again, after few seconds of booting please check OEM unlock and you will have it.

I have tried logging the ip address where this request is made but on non rooted phone its hard to get and all the firewalls which work as vpn to log the traffic are failing because i am sure Samsung has already patched the loophole by detecting vpn. I also tried to analyse the code from different apk's and jar files but still no luck. I think implementation of this is beyond apk's and jar's, it can be in lib files or in kernel. If anyone can log the request or ip i hope in that case we can have some methods to get rid of this locking but the point is that Samsung has implemented this check on every boot no matter you are rooted or not. Whenever phone reboots it connects to that server to get the latest status.
[Samsung Galaxy Note 8 Questions and Answers] iunlock:
Actually that isn't a conspiracy at all. I'm with you mate.

I had forgot to mention this in my post, but if it isn't A, B, or C, then D (hardware related) could definitely be the culprit.

Yes indeed. The phone communicating with the servers is like the T-Mobile Unlock app that I had mentioned, where it is triggered (lock status lifted) all via OTA.

What is also interesting are those with a UK SIM testing it in an Asian variant device that still got the OEM unlock issue...

It's within the code somewhere.... Pretty darn sure...
[Samsung Galaxy Note 8 Questions and Answers] ravian29:
I bet it is, i already have tried analysing the code and i have found out some chunks of it but its not complete logic but still trying to get some important logic which may guide us to a workaround. Lets see...
[Samsung Galaxy Note 8 Questions and Answers] fragtion:
Consider the following hypothetical scenario:

1. OEM Unlock toggle appears

2. User deletes saved wifi networks, disables wifi, disables 3g (and removes sim)

3. User enables OEM Unlock toggle

4. User proceeds to root or flash custom roms, finds OEM toggle disappeared, reboots, and device is softbricked

5. User powers off phone completely

6. User boots to download mode and flashes Stock through odin (or smart switch)

7. User boots to system, only to find that OEM Unlock toggle is hidden

8. User enables wifi, 3g, etc again

9. User must still wait 7 days for OEM unlock to re-appear

So. If it is true that the phone "calls home" by retrieving OEM status from Samsung servers on boot, then I propose:

If the user disabled Wifi before enabling OEM toggle and flashing roms, and then returned to stock, all before re-enabling internet connection, then: Why must the user still wait for 7 days before OEM toggle re-appears? According to Samsung, you never moved away from stock firmware. Knox and warranty are surely an invalid response to this question because the logic still applies recurrently even after they have been tripped, correct?
[Samsung Galaxy Note 8 Questions and Answers] iunlock:
Good stuff... hope to find the culprit.

Interesting.... hmmm.... I'm guessing that once it detects a change and when it phones home, that triggers the 7DayofChaos.
[Samsung Galaxy Note 8 Questions and Answers] djsaad1:
Anyone know the best place to order a dual sim with the oem unlock option out of the box? I ordered one from never-msrp and it didn't have oem-unlock out of the box.
[Samsung Galaxy Note 8 Questions and Answers] krabman:
Just a slight correction, it isn't 7 days, it's 7 days for most, it is in no way written in stone. A number of folks have gone long and a lesser amount short with many of those saying they knew about the timer and did not try and flash, alter system files, etc. Too many reports of it not to think that it isn't true. In the long case you have to figure a reset of the timer was called by some other factor rather than flashing stock firmware. What's stranger are some have gone short. Mine was 5 days. By the time I gave up and decided to wait for the timer I was POed at the phone, tired of screwing around with it, irritated, the long and the short of that being I did nothing during my wait period. I didn't feel like setting the phone up more than I had to since I knew I would be flashing in a week so I just lit up messaging and the other basics and left it be. Somehow though through a process that we haven't identified I somehow altered my 7 day time and made it shorter all while another M1 owner who bought from the same eBay store had the seven day wait during the same time period. Why is that? What mechanism would act to shorten it and why would such a process be possible at all? In theory such a timer would be a limiting device and shorter spans should not be a possible function. Yet enough had it happen that we know it is happening. See where I'm going?

Another little tidbit. I called up Handtec and they told me that the OEM unlock button can be enabled before they even put the sim in the phone to region unlock it. How does that play out with whats described above? Is that accurate? Dont know but he told me they were getting asked that question on a daily basis and many times a day to verify if the OEM unlock button could be enabled. The fellow above certainly sounded like he knew what he was about, all I can conclude is that those two things don't jibe.

This has become something akin to fun. Not the good kind of fun, the kind you laugh about after it's over. O_o
[Samsung Galaxy Note 8 Questions and Answers] force70:
Been asked and answered numerous times.

Clove uk.

Next time please use the search button dude.

sent from my Note FE
[Samsung Galaxy Note 8 Questions and Answers] Andysmith71:
Don't root stock or you will get the unofficial binaries issue... you need to do a custom ROM at this stage. Many of us have been in jail the last week from tying to root stock early in the peace.

**ugg...disregard my post, this was answered ages ago** :/
[Samsung Galaxy Note 8 Questions and Answers] djsaad1:
Clove UK doesn't seem to have a dual sim option.
[Samsung Galaxy Note 8 Questions and Answers] sansnil:
Yep, and Handtec is preorder only they tell me. I ordered one from Kick. They have the duals in stock and age up inn the whole region unlock thing but I have no prior dealings with them.
[Samsung Galaxy Note 8 Questions and Answers] ravian29:
I already showed a piece of code related to OEM unlock, please check the attachment on this post

https://xdaforums.com/showpost.php?p=73970571&postcount=797

If you understand the code then you can easily figure out a few checks. As i told phone requests a response from Samsung servers on every reboot and when this is being done phone checks the conditions and if these conditions are met, OEM unlock appears. Its simple logic but the problem is to find these conditions in apk, jar, lib and kernel code or simply log the request. I am trying to do both in limited time but still no luck.
[Samsung Galaxy Note 8 Questions and Answers] force70:
The dual sim version you want to avoid due to the OEM unlock issue

sent from my Note FE
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
yo i haven't got my oem unlock yet im almost there,but why everybody asking mad questions,get oem unlock turn it on,flash twrp and flash roms,im missing something here?,i see ppl with mad steps,including flash roms that are rooted already and bunch of bs

i can care less about dual sim,but if dev wanna want roms for dual sim,that fine by me too
[Samsung Galaxy Note 8 Questions and Answers] willcor:
I personally think you spot on ,thanks .! !!

My reason ,

After i did a factory reset and OEM showed again, re Sunday ( 7 days waiting )

I decided to do a normal reboot ,as to see if OEM would stick or not (This was a day later )

I have OEM unlocked, but have done nothing else,( eg root, flashing custom Rom etc)

After the normal reboot ,my OEM option , was missing .

I again rebooted a few times ,OEM option was still missing .

Check this morning OEM option, still missing .

After reading your post above,i switched wifi on ,

checked Developers for OEM option nothing.

I rebooted with wifi on and immediately check Developer's option .

OEM was back .!

So yes from my experience your explanation must be spot on .............

that phone checks Samsung servers for conditions of reboot etc.

Thank you .
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
if i get oem,and i flash twrp and roms,would i be ok,ad i dont have to worry abut this anymore,im confuse ,its seem ppl here only want want root,if i put a rom, dont have to worry bout this anymore?

some roms dont come with oem unlock,but its still there
[Samsung Galaxy Note 8 Questions and Answers] pswin09:
Read carefully bro.
[Samsung Galaxy Note 8 Questions and Answers] willcor:
I refer to my above post /experience.

As a after thought.

Any way to fool Samsung servers, that conditions

has been met ?

It seems to me like a case of "ET phone home" ?

Good luck
[Samsung Galaxy Note 8 Questions and Answers] DeeXii:
This explains a bit but...

Why would they let OEM lock appear after 7 days and then reset it under various conditions?

Why not just either block the option or give the option?

This all seems strange. It also sucks, now the USA locked out bootloader stuff is spreading to global phones. :(
[Samsung Galaxy Note 8 Questions and Answers] ravian29:
May be a grace period for people to think about modifying the device and test it without use or may be penalize for modifying it.

I think because of lawsuits they will face by outright phone owners lol
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
can someone tell me if i can put roms on this once i get oem unlock, and never worry again...because if im going through this all the time,ill sell this crap for a F model?
[Samsung Galaxy Note 8 Questions and Answers] iunlock:
N950F UK Variant Ordered...

Grab them while we can? I'm not taking any chances.... hope to get this resolved soon to save the devices that are still not infected.

My thoughts: Hurry and get one before the plague spreads....
[Samsung Galaxy Note 8 Questions and Answers] j3yps:
As far as i know this is not "viral" so if you're not affected, you won't be.
[Samsung Galaxy Note 8 Questions and Answers] iunlock:
Salamat. I hope this holds to be true for the sake of the future of the Note line and Enthusiasts...

Mabuhai. :highfive:
[Samsung Galaxy Note 8 Questions and Answers] j3yps:
Let's hope that whatever THIS is, it's something that could be fixed by our awesome resident developers.
[Samsung Galaxy Note 8 Questions and Answers] Gammer2017:
I tested it. After rooting I ran the app and rebooted I got stuck with red writting
[Samsung Galaxy Note 8 Questions and Answers] rymenigmatic:
Were you signed into your Google account when you boot it into safe mode?
[Samsung Galaxy Note 8 Questions and Answers] sun2sunny:
hi today is my 7th days i hope in four hours oem unlock will appear ... what should i do this time last time i had done this

01. flash twrp

02. reseted by typing "yes"

03. flashed majisk

04. flashed "dm no variety"

after doing these steps phone rebooted

05. at first screen phone comes with a message sim card changed and restarted and factory reseted by itself

06. after reset rebooted automatically

07. after rebooting and completing setup phone give messages about security concerns and ask for rebooting

08. at rebooting phone give error of custom binaries at first screen in red color.

now please tell me what should i try today.. .

i want custom rom and root without any rebooting issue... ...i m waiting for the experts who had already done without any problem.
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
can some one answer this for me,what this red writing,is that a brick,can i flash a rom straight up after oem unlock and flash twrp and be ok?.this is sounding like a boot loader lock,i gotta know or else im selling this device
[Samsung Galaxy Note 8 Questions and Answers] kenpaci:
You need learn few pages before, 70% user have this problem, because odin twrp stick with stock rom, mean root stock get soft brick, and your oem is missing again..you need start again..flash stock via odin, and wait one weeks for enable oem again, and start again twrp+jump to custom rom, see few pages before
[Samsung Galaxy Note 8 Questions and Answers] fragtion:
Every device with OEM appearing is another chance for us to test something important to further this research, so with more users now coming out of jail again, we obviously want to minimize chances of these users getting softbricked again unnecessarily because they followed bad instructions!

So forgive me if this has been answered already, but do we actually have any proof yet of a DUOS (dual-sim SM-N950F/DS) NB: which has already been softbricked ("Only official released binaries allowed to be flashed" error), then succeeding afterwards (when OEM re-appears), with obtaining a "sticking" OEM after reboots, by using [MENTION=1230317]krabman[/MENTION] 's method?

It seems like the OEM intermittency is worse on the DS models (at least some of them) and that this method might not even work on the dual sim model, & AFAIK it is only SM-950F users who succeeded with it, apart from one user, [MENTION=4156824]ZeroDefined[/MENTION] , who also has DS model, but used this method on his first opportunity with OEM (never actually softbricked)

So what we need right now is for any DUAL-SIM SM-N950F/DS user who was softbricked, and is now coming out of jail (seeing OEM appear for at least the SECOND time) to now try krabman's method, so we can determine if this workaround is really effective for all DS models? If it works , then it would seem that we have our solution for all Exynos N950F / N950FD / N950F/DS and then someone can create new thread with definitive instructions set (surely no point making that thread yet, until we have obtained such a fullproof method)

Can you please confirm exact model variant & CSC of your device then we can help point you in the right direction

Unless someone else is prepared to answer this for you in more depth, you're going to have to read the thread mate, it's a long answer and a very lazy question.
[Samsung Galaxy Note 8 Questions and Answers] kenpaci:
I thing someone need open new thread for sorted step by step root without missing oem toogle
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
i read them all,but ppl start talking about red writing and thing like that,is red writing a brick?
[Samsung Galaxy Note 8 Questions and Answers] rocketmail.com:
Yeah,

And the working theory or proposed theory pinned to OP.
[Samsung Galaxy Note 8 Questions and Answers] recepo1:
Yes
[Samsung Galaxy Note 8 Questions and Answers] sun2sunny:
my note 8 model is N950F

N950f

baseband: N950fxxu1aqhb

build no: Nmf26x.n950fxxi1aqi1

csc: Pak/pak/xeu
[Samsung Galaxy Note 8 Questions and Answers] fragtion:
Right now, for your device, THIS seems to be your best approach

When your OEM unlock appears again, immediately switch it on, and enter Download Mode. Then proceed to follow those steps, and let us know your results.

- For ROM choice, Dr. Ketan's ROM is suggested so that OEM toggle is visible (It is also suggested to flash with SIM card removed throughout the process)

* Edit: apparently Nemesis ROM has this too (and also works with krabman's method) - so you could also go with that if you prefer

- After booting into custom ROM for the first time, you must CHECK if this OEM toggle is still visible.

If is hidden, then you will have to be very careful to prevent phone from rebooting for another week. When OEM appears again, disable and re-enable it, and reboot (recommended by [MENTION=5459614]white7561[/MENTION] , untested whether this works). Otherwise, if phone reboots before, you will be jailed/softbricked again

Either way, please help us by documenting which steps you take, and the results you get, and Good luck :)
[Samsung Galaxy Note 8 Questions and Answers] chloeleedow:
Out of jail flashed nemesis Rom following [MENTION=1230317]krabman[/MENTION]

And a couple of others that had good reports from the Same method, oem lock was there straight away didn't do anything bar enable developer options it was already ticked, I am rooted with magisk and passing safety net for tap and pay banking, can't wait for official xposed to be fixed for our devices, a minor issue from following a github thread. Haven't rebooted yet and probably won't till xposed is verified working for me even if I risk losing android pay I don't care if xposed works although with unofficial xposed nougat on my s7 Android pay worked with xposed still so im hopeful. Everyone should follow the steps that [MENTION=1230317]krabman[/MENTION] until permanent fix if ever is found. N950f telstra (Australian) firmware/csc never got a forced reboot to change that at initial set up either incidentally. I've lost volte but that could be stuff missing from the custom Rom itself. Might flash [MENTION=3931450]dr.ketan[/MENTION] Rom tomorrow if I'm feeling lucky lol
[Samsung Galaxy Note 8 Questions and Answers] chloeleedow:
This is the instructions I followed thanks to original poster! ??
[Samsung Galaxy Note 8 Questions and Answers] LongGer64:
My oem unlock went missing after TWRP on the 6th Oct., 4 days ago. Thought I am going to be jailed for a week.

Couldn't wait too long and decided to try toying around, trying my luck.

- turned off Wi-Fi, data and flight mode

- reboot.

- turned on flight mode, WiFi and data one at a time after reboot.

- repeated the above 3 times.

- unfortunately no luck .

So I decided to try another method.

This time round, I did the following

- off Wi-Fi, data and flight mode

- boot into stock recovery

- clear cache

- boot system

- on fight mode, Wi-Fi and data

- still no I oem unlock

- repeated this twice.

- still nothing shown.

Decided to give up.

To my surprise, oem unlock shown in the dev opt after half an hour.

Not sure if what I did causes the toggle to surface.

Phone N950F/DS Singapore M1

Just share what I did.
[Samsung Galaxy Note 8 Questions and Answers] rocketmail.com:
Did you flash a custom firmware before it vanished, or toggle just disappeared all of the sudden?

If you did nothing before it went, then it's possible it was still there.

A question, did you go to download mode to check if FRP was off when toggle disappeared?
[Samsung Galaxy Note 8 Questions and Answers] chloeleedow:
A repost with more screens with hopefully helpful info for others, turns out my csc did change and probably why I lost volte waaa never mind I'll flash my actual csc with flash fire hopefully bringing it back without a factory reset if I use the right file ?
[Samsung Galaxy Note 8 Questions and Answers] Deezy88:
should i reboot my phone after 7 days and then oem unlock toogle will be there,or just leave it running for 7 days ,and it unlock its self,i dont wanna reboot and lose my up time as im reaching 7 days?
[Samsung Galaxy Note 8 Questions and Answers] LongGer64:
I did Odin flashed TWRP and SuperSu in TWRP recovrry.

Successfully system boot the first time but oem unlock went disappeared. Failed to boot into recovery after oem unlock went missing and red binary appeared. Ended up soft bricked.

Hence back to stock fw for the last 4 days.

However, during this time, download mode shows oem unlock off and FRP off.
[Samsung Galaxy Note 8 Questions and Answers] krabman:
You can reboot without concern, it's flashing firmwares that are a definite no-no. It's possible that going into recovery, downloader, and possibly some other factors can act to reset the clock causing some to go past the 7 day mark before getting OEM. There are not enough data points to confirm what factors may lead to resetting the clock. Although it's equally possible that the clock isn't being reset but rather stopping and then restarting again for some users. Still a lot of questions out there to be answered. The good news is a lesser amount have gone short (again, no one knows why) so it cant hurt to check every so often to see if you got lucky.

---------- Post added at 07:25 AM ---------- Previous post was at 07:22 AM ----------

OEM will show unlocked in downloader every time once you enable OEM unlock whether you have enabled it with the switch in the GUI or not.
[Samsung Galaxy Note 8 Questions and Answers] chloeleedow:
Thoughts on flashing home csc file through flashfire mate?
[Samsung Galaxy Note 8 Questions and Answers] krabman:
Mine is a Singapore M1 FDS, any more questions? * Big grin*
[Samsung Galaxy Note 8 Questions and Answers] pswin09:
I think that you can change csc without flashing if you're on same region multi csc. Just dial *#272#imei#. IMEI is your phone imei no. But it will factory reset. Please share to us if Flashing home csc with flashfire work or not. Thanks
[Samsung Galaxy Note 8 Questions and Answers] LongGer64:
This time round when the OEM came back in dev opt, it is already toggked to on without me trouncing it. Obviously, OEM was on and hidden but bootloader was locked?
[Samsung Galaxy Note 8 Questions and Answers] krabman:
You'll be first if you do it or at least first to report the results. As I know I can go in and out of recovery without issues I would likely flash there and factory reset followed by praying and then drinking a solid barley-wine results depending. Of course one should never take chances when abusing alcohol so my process there would be to toast my success or conversely drown my sorrow if it failed. :) Good luck and don't forget to report in if you decide to have a go at it by whatever means.
[Samsung Galaxy Note 8 Questions and Answers] pswin09:
To answer your question, yes you can flash twrp and rom. After first boot with custom rom go to developer option and check whether oem unlock option is there or not. If oem unlock option is there you are safe to reboot, if not there wait for 7 days without reboot your phone. If you reboot without oem unlock option in developer option setting you will see red text look like below pics. That mean your phone is soft brick and only flashing factory firmware will slove but your oem will reset and wait for another 7 days jail to show oem unlock option.
[Samsung Galaxy Note 8 Questions and Answers] krabman:
We can't know what state the switch is in if it's hidden, this is one of the things ketan was trying to figure out, if it's not just hidden but in an off state when not visible. This would explain a lot of behaviors we're seeing here but hasn't been proved out either way. Regardless if you have the switch and have enabled and it is visible you should be able to safely flash if you desire. Or I suppose a better way to say might be you can flash as safely as any of the rest of us in this mess. There isn't a single report in this thread of a flash failure following the stupid but somehow working procedures we've figured out for those with a visible and enabled OEM.
[Samsung Galaxy Note 8 Questions and Answers] Sn0wR@pt0r:
Just a quick question...

In the USA here...looking to get a Note 8 for use with T-Mobile or AT&T (maybe both) in the near future. Had a Note 4 previously.

I'm aware that a SM-N950F from Clove UK, is good to go with the OEM Unlock.

However...I've been watching and waiting for B&H Photo to get the N950F "in-stock" as well.

I see that B&H now has them (N950F's)...do we know if the F's from B&H are good to go w/ OEM Unlock yet...or is this still a pending question??

Also...are the SM-N950N's from Wondamobile good to go w/ OEM Unlock too...or are they still TBD as well?

Just weighing my options for sources regarding where to buy...not in a hurry, so just gathering the needed info.

TIA :cool: