"Security Error" - T-Mobile Samsung Galaxy S6

So, my mother-in-law's G920T that she's been using for 1yr+ one day decided it was going to lose it's mind and start giving her the "Security Error, Phone has been flashed with unauthorized software and is locked" message.
She finally gave up and replaced it, so I asked her if I could take it away and try to revive it. The phone had never been flashed/rooted/attempted unlocked and has only been used on T-Mobile.
First thing I did was a factory default through the phone itself (which of course did nothing) - on further digging, I discovered the IMEI had been reset to 350000000000006. I tried re-flashing through SmartSwitch, Odin, backup/restore of EFS (after finally giving in and rooting), etc etc etc.
Nothing I've tried has seemed to help... At this point I'd just like a functioning device that I can hang onto as a spare - I've already tripped the Knox counter so I know Samsung Pay/etc. is useless and I guess I can always flash a 3rd party ROM (I haven't researched what is available, will take recommendations) to get rid of the Security Error (unless fixing the IMEI will get rid of that).
Any suggestions on how I can revive the IMEI on this thing? I'm not going to send it off for repair/pay to fix it, if I can't get it working I'll either keep it as a "dumb" device with no cell service or will throw it in the bin.
Thanks in advance.

For what it's worth, the correct IMEI does show when booting to Download mode and hitting the Home button (serial number/IMEI are correct/match the back cover), my baseband does show a version in "About phone" and I do get a signal strength in the menu bar, I just have a bogus IMEI.

Same problem. I have a perfectly good Galaxy s6. But after going overseas, it decides that it has unauthorized software and is now locked. I didn't even change the SIM card while overseas. I have T Mobile, which gives me 2G speeds in lots of countries. No idea what to do now.

I ended up finding someone to remotely reprogram the IMEI. It does not match the one on the device itself but has worked fine now for a long time. I don’t remember who I used to do this - sorry I couldn’t be more help. It was cheap (maybe $20 USD or less to get done) and quick.

Related

[Q] Need step by step HELP to find issue and fix problem

Hello,
I've been come to xda-developes site a number of times over the past couple of years and have always managed to work my way through just about every issue I've encountered...until now
This is my very first time posting, so please bear with me if my terminology is wrong or if I'm not really clear on anything
I got this Unlocked LG Thrill P925 for my husband from someone off of Craigslist. He loved the phone and used it for several months before encountering this issue. When I got the phone it was already unlocked. Although I didn't spend a whole lot of time digging around in his phone, I kind of assumed it was probably factory unlocked because I never saw SuperUser or any other typical app you'd normally see on a rooted/unlocked phone. Considering it is an AT&T phone and we'd been using it on T-Mobile, I definitely know it was unlocked lol.
As stated, everything was fine for several months. One day, my husband was having some issues with the phone not working properly. He finally removed the battery for a while then put the battery back in and turned it on. He said when it came on it had a bunch of computer type code (like letters/numbers/characters) flashing across the screen. One day I decided to mess with it and I finally got it to boot up, however, the phone is NO LONGER UNLOCKED. It seemed like it had basically just factory reset itself or something. I quickly found the battery would drain VERY QUICKLY. Because of this, I was really hoping that maybe the battery crapped out and caused the phone to have some sort of meltdown.
I got a new battery for it, unfortunately the new battery didn't help anything.
I started fiddling around with the phone and realized SEVERAL issues that I haven't been able to figure out how to work around (I've found posts of other people having very similar issues, however, it seems there phones were apparently rooted/modded etc...I have nothing that points me to believe this phone is rooted).
When I go to Settings/About Phone it shows the Model Number as LG-P925
Android Version: 2.3.5
Baseband Version: L6260_MODEM_SIC_01.1042.00
Kernal Version: 2.6.35.7+
Build number: GRJ90
Software Version: LGP925-V20p-FEB-22-2012
If I click on Software Update, I get a pop up that says "The application com.lge.omadmclient (process com.lge.omadmclient) has stopped unexpectedly. Please try again" and I have to Force Close it
If I go to Settings/About Phone/Status it shows
My Phone Number: Unknown <I do not have an active at&t sim only T-Mobile and it won't register>
Network: Unknown
Signal Strength: 0 dBm 0 asu
Mobile Network Type: Unknown
Service State: Out of Service
Roaming: Not Roaming
Mobile Network State: Disconnected
IMEI: Unknown
IMEI SV: Unknown
Usually when I shut the phone off **OR** if I try to do a Hard Reset (Hold Volume & Power Button down etc) the phone WILL NOT boot back up until I connect it to the USB again as if I'm charging it...even then I sometimes have to mess with it by taking the battery out, put it back in, plug the usb in THEN start it. Most of the time it will not start up without the usb being plugged in.
I have LG Mobile Tool...Occasionally it detects the phone and shows there's a software update available. However, when I try to update it, it either just hangs up at apprx 4% OR it will go into Emergency Mode and want me to enter the IMEI. Everytime I try to enter the IMEI # the numbers disappear before I can click next and it prompts me again to enter the IMEI #. ***Also..FYI...if I try to obtain the IMEI # by using *#060# I get a pop up that says Reorganinzing Internal Processes Please Try Again in a Short While***
I apologize in advance if my post seems long winded...I just want to make sure I give all the possible details I can...I'm a techy person, I really like working on phones etc and I've taught myself everything I know so far. Yes, I'd like to get the phone working again, however, I also want to BEAT THIS CHALLENGE....IT'S DRIVING ME CRAZY
Thank you for any help you can give me!
Somehow you lost IMEI. If the phone had an invalid or stolen one, I am unsure how to deal with that. Sometimes flashing firmware will also fix IMEI.
http://forum.xda-developers.com/showthread.php?t=2195753
Otherwise there are guides for fixing just IMEI. Check Optimus 3D section (same phone, Euro version).
drastic00 said:
Somehow you lost IMEI. If the phone had an invalid or stolen one, I am unsure how to deal with that. Sometimes flashing firmware will also fix IMEI.
http://forum.xda-developers.com/showthread.php?t=2195753
Otherwise there are guides for fixing just IMEI. Check Optimus 3D section (same phone, Euro version).
Click to expand...
Click to collapse
Thank you so much for your response. I looked over the link you gave me, in fact I found that thread before posting myself.
What I'm confused on and not sure how to proceed is that #1 it says must have ics...I only have gingerbread and so far have been unsuccessful in installing any updates/upgrades. I honestly don't even know where to start
I love android phones and am not a big fan of iPhones, however, I can jailbreak/unlock gsm iPhones no problem. I'm a bit more confused with flashing & rooting etc. I keep reading as much as possible, but embarassingly enough...I'm not even sure what process has to come first in this. Flash the from first? Attempt to root first? Or??? I can get wifi on the phone, but have not been able to install updates etc via the PC.
I'm sorry to be a pain...I want to be able t do this! I'm just stuck. I rooted/unlocked my galaxy s2 a coupe of years ago without issue, however, I really don't even remember all the steps I did with that. As much as I don't like iPhones, most of my family prefer iPhones over androids...which is why/how I learned to jailbreak and unlock them pretty easily. I've never ran into a problem like this where I have no imei etc. Therefore I am at a total loss on where to start given the current build and android version etc
Also, I forgot to mention in my initial post, I've read from some people that the apn could be the problem...I've tried going into the apn however, as soon as I click on apn it kicks me right out
It just means you can't install xbsall's custom ROM on top of GB; following the steps puts you to a rooted version of ICS, then the custom ROM, if you choose to install it.
Pretty sure IMEI should still appear even if APN is not set up, so I doubt that is the problem.
drastic00 said:
It just means you can't install xbsall's custom ROM on top of GB; following the steps puts you to a rooted version of ICS, then the custom ROM, if you choose to install it.
Pretty sure IMEI should still appear even if APN is not set up, so I doubt that is the problem.
Click to expand...
Click to collapse
Thank you again for your response. I will give it a try later this afternoon and post the results.
It's just crazy...can't figure out how it could be working fine for months, then suddenly have a meltdown along with a case of severe amnesia lol. I've seen there's a lot of other people with pretty much the exact same issue...on the Thrill forum as well as the Optimus 3d.
Yeah, that is odd. We call that a 'glitch.' Who knows, maybe some startup process checked IMEI and didn't like it somehow. No telling... Hopefully it is not some hardware issue.

Blank Service Menu/Mode, Unknown IMEI, and Undetected SIM Card.

Hello.
A friend of mine worked at a company that closed last week, and they had some demo-based Galaxy Note 8 phone that were unused. So I took one of them, and I'm now trying to make it work with my SIM Card.
I don't looks like it recognize it, phone network isn't available, IMEI is unknown, and Service Menu (that i tried to turn radio on) is blank (I accessed it trough *#0011#). I passed like 5 hours googling, but since it seems to be a very specific issue (the phone was probably locked for Demo puprposes.). I tried a custom ROM, I rooted the phone, but nothing changed.
I'm sorry if my question isn't that accurate and descriptive, got a real headache trying to find an issue tonight. Feel free to ask for precisions.
Thanks for helping, as always.
Demo units will not function as normal legally acquired devices do, no solution will work, get a really working device, xdemo units are exactly that, just for show
Changing motherboard won't do the trick ?
It will, but I would rather get a never opened device, besides, a motherboard will not be cheap

Help with Verification Failed on Note 9

Hi everyone! First I just want to say thanks to anyone who has any information to help me.
I have a Note 9 and I enabled the directional lock (to unlock the phone). My phone is also encrypted so it will prompt me to enter the the directional lock anytime the phone is turned on and then again to unlock the screen. I turned my phone off the other day. When I turned it back on I saw the screen prompt for a directional lock. My friend needed help with something so I ended up talking to her before I even tried to unlock it (big mistake). When I got back in my truck to use my phone the screen was black and the message appeared, "Verification Failed, Unable to restart your device. The integrity verification has failed. You need to reset your device to factory default settings. This will erase all your data. I am not sure if while I was talking I accidentally touched the screen causing this message.
The biggest problem is I do not have a backup of certain files. They are on the internal memory of my device. So I DO NOT want to do a factory data reset. I just want to know a solution to get back into my phone again.
Here are the things I have tried:
-Soft reset with Power and volume key
-Wiping cache partition
-Calling Samsung
-Calling T-Mobile
-Downloading Samsung Switch (Does not Recognize device)
-All options in recovery mode (except factory data reset)
-Download mode
My phone is not rooted but it did go through a series of OTA updates and now is running Android Pie. I have came across a few other people with this issue and it happened after updating.
I want to know if there is a way to get in the phone or is there a way to recover my encrypted data and then decrypt it. I also would like to know if I can have the steps to use Odin (already downloaded on my computer) to reinstall the current firmware on the phone. I am wondering if anyone has ever done this and still kept their data (pictures, videos, memos, documents and text messages). I have only flashed my device probably about 10 years ago. So step by step directions would be amazing. Also I do have developer options enabled.
I have searched the forum and the only advice I have seen is to reset but I want to know how to keep my data. The only thing I have came across is a store that has a "Samsung" machine that will do a Home Restore without losing your data. He told me if something is corrupted that I could still lose my data. I have over 100gbs of data I need to access and it would be horrible to lose it.
Finally I have one last question is to back up all my encrypted data so that if I find a way to decrypt it later?
PLEASE any advice besides the things I have already tried would be so helpful. If anyone is able to help me I PROMISE I will help you with whatever you are trying to do and believe me.... I have the resources to do so. It will be a way I will show my thanks.
tt5 said:
Hi everyone! First I just want to say thanks to anyone who has any information to help me.
I have a Note 9 and I enabled the directional lock. My phone is also encrypted so it will prompt me to turn on the directional lock anytime the phone is turned on and then again to unlock the screen. I turned my phone off the other day. When I turned it back on I saw the screen prompt for a directional lock. My friend needed help with something so I ended up talking to her before I even tried to unlock it (big mistake). When I got back in my truck to use my phone the screen was black and the message appeared, "Verification Failed, Unable to restart your device. The integrity verification has failed. You need to reset your device to factory default settings. This will erase all your data. I am not sure if while I was talking I accidentally touched the screen causing this message.
The biggest problem is I do not have a backup of certain files. They are on the internal memory of my device. So I DO NOT want to do a factory data reset. I just want to know a solution to get back into my phone again.
Here are the things I have tried:
-Soft reset with Power and volume key
-Wiping cache partition
-Calling Samsung
-Calling T-Mobile
-Downloading Samsung Switch (Does not Recognize device)
-All options in recovery mode (except factory data reset)
-Download mode
My phone is not rooted but it did go through a series of OTA updates and now is running Android Pie. I have came across a few other people with this issue and it happened after updating.
I want to know if there is a way to get in the phone or is there a way to recover my encrypted data and then decrypt it. I also would like to know if I can have the steps to use Odin (already downloaded on my computer) to reinstall the current firmware on the phone. I am wondering if anyone has ever done this and still kept their data (pictures, videos, memos, documents and text messages). I have only flashed my device probably about 10 years ago. So step by step directions would be amazing. Also I do have developer options enabled.
I have searched the forum and the only advice I have seen is to reset but I want to know how to keep my data. The only thing I have came across is a store that has a "Samsung" machine that will do a Home Restore without losing your data. He told me if something is corrupted that I could still lose my data. I have over 100gbs of data I need to access and it would be horrible to lose it.
Finally I have one last question is to back up all my encrypted data so that if I find a way to decrypt it later?
PLEASE any advice besides the things I have already tried would be so helpful. If anyone is able to help me I PROMISE I will help you with whatever you are trying to do and believe me.... I have the resources to do so. It will be a way I will show my thanks.
Click to expand...
Click to collapse
u can try with odin and flash latest firmware but it will not remove encryption. none the less it might at least get you access to the unlock screen and allow you to unlock but it might not.
read up about odin and get latest version.
read up on stockfirmware and your phone model and which carrier CSC code you are on and get latest version. via samfirm tool or frija or sites like sammobile
flash it in odin by filling the different .md5 files to the according slots. but for CSC slot use home_csc.md5 to not wipe data.
but what i dont understand is what does the landscape/portrait have anything to do with this?
bober10113 said:
u can try with odin and flash latest firmware but it will not remove encryption. none the less it might at least get you access to the unlock screen and allow you to unlock but it might not.
read up about odin and get latest version.
read up on stockfirmware and your phone model and which carrier CSC code you are on and get latest version. via samfirm tool or frija or sites like sammobile
flash it in odin by filling the different .md5 files to the according slots. but for CSC slot use home_csc.md5 to not wipe data.
but what i dont understand is what does the landscape/portrait have anything to do with this?
Click to expand...
Click to collapse
Thank you so much for the response!! My Phone is from T-mobile ]. I have been reading up on it and I did download Odin but I am unsure of how to exactly use it. I could figure it out with directions but I am afraid to do the wrong thing because I have only done it one and that was with Samsung Kies ( a long time ago.)
I am unsure what you mean by Portrait and Landscape mode in my post. I don't see where I mentioned it. Maybe you are referring to the directional lock. That is how you unlock the phone (with a series of directions). For instance... left, left, down, down, right, left, up. I mentioned it because that could be causing this issue. That is the method to get past the secure startup as well. A lot of people don't know about that option because you have to enable it in accessibility menu.
tt5 said:
Thank you so much for the response!! My Phone is from T-mobile ]. I have been reading up on it and I did download Odin but I am unsure of how to exactly use it. I could figure it out with directions but I am afraid to do the wrong thing because I have only done it one and that was with Samsung Kies ( a long time ago.)
I am unsure what you mean by Portrait and Landscape mode in my post. I don't see where I mentioned it. Maybe you are referring to the directional lock. That is how you unlock the phone (with a series of directions). For instance... left, left, down, down, right, left, up. I mentioned it because that could be causing this issue. That is the method to get past the secure startup as well. A lot of people don't know about that option because you have to enable it in accessibility menu.
Click to expand...
Click to collapse
oh instead of a pin or biometrics the pattern lock screen?
but if it was locked because of too many tries then dont think you can do anything. you should have received a message through the email used to register your samsung account and follow it to get it unlocked.
any talk of circumventing this type of lockout isint something that can be discussed on xda because there is no way to prove that it was by accident. and even if it was and there really was a way to bypass it, it would give criminals insight. so sorry but there isint much more that can be said.
bober10113 said:
oh instead of a pin or biometrics the pattern lock screen?
but if it was locked because of too many tries then dont think you can do anything. you should have received a message through the email used to register your samsung account and follow it to get it unlocked.
any talk of circumventing this type of lockout isint something that can be discussed on xda because there is no way to prove that it was by accident. and even if it was and there really was a way to bypass it, it would give criminals insight. so sorry but there isint much more that can be said.
Click to expand...
Click to collapse
Yes, it is an option instead of the regular pattern. I like it because it is hard to copy for anyone looking at you unlock your phone and if you lose it... even looking at the screen will not tell them how to unlock it because they need to know the sequence.
I am unsure what caused it.. maybe me or the updates. I have never had this problem before in my entire life. I had the Note 2, 3, 4, 5, 8 and 9. (Yes, I love my Notes.) Not one of them have done this and I only noticed the directional lock beginning on the Note 5. I have an S10 as well and I could't find the option. So I am not sure if it is just specific to Galaxy Notes.
I never thought of giving someone else insight on how to get into phones. That is a good point! I understand that not being allowed. I have known about XDA developers for a long time. I think back somewhere in 2007 -2009 when I was very active on Tmonews forums. So I really haven't been on a forum in like 10 years. I am sure a lot of things have advanced since then but I REALLY appreciate the time you took to respond.
I just have two more questions... I am paying for this phone like $30 a month and I also have the $15 insurance. I can't do anything to this phone that would void the warranty. However, the place that told me they may be able to help me is an authorized Samsung repair center. He said he would have to download the firmware and reinstall it on the phone. He also told me that he could do it without losing data (Home Restore) but if something is corrupted it also could erase. It is with a machine that is directly given to them from Samsung. If somehow I lose my data....can it be recovered if I pay a data recovery company? These pictures are VERY important. Honestly, my data is more important to me than the phone.
Lastly, I remember my email I used for the Samsung account however it was an outlook email and it gave me so much trouble trying to log in (even when the phone was fine). However, if I am able to get in do you think it would take the message off the screen? I know my directional lock to get back in. All I need to do is get back to that screen but it won't pop up.
Again seriously.... I thank you so much for trying to help!
tt5 said:
Yes, it is an option instead of the regular pattern. I like it because it is hard to copy for anyone looking at you unlock your phone and if you lose it... even looking at the screen will not tell them how to unlock it because they need to know the sequence.
I am unsure what caused it.. maybe me or the updates. I have never had this problem before in my entire life. I had the Note 2, 3, 4, 5, 8 and 9. (Yes, I love my Notes.) Not one of them have done this and I only noticed the directional lock beginning on the Note 5. I have an S10 as well and I could't find the option. So I am not sure if it is just specific to Galaxy Notes.
I never thought of giving someone else insight on how to get into phones. That is a good point! I understand that not being allowed. I have known about XDA developers for a long time. I think back somewhere in 2007 -2009 when I was very active on Tmonews forums. So I really haven't been on a forum in like 10 years. I am sure a lot of things have advanced since then but I REALLY appreciate the time you took to respond.
I just have two more questions... I am paying for this phone like $30 a month and I also have the $15 insurance. I can't do anything to this phone that would void the warranty. However, the place that told me they may be able to help me is an authorized Samsung repair center. He said he would have to download the firmware and reinstall it on the phone. He also told me that he could do it without losing data (Home Restore) but if something is corrupted it also could erase. It is with a machine that is directly given to them from Samsung. If somehow I lose my data....can it be recovered if I pay a data recovery company? These pictures are VERY important. Honestly, my data is more important to me than the phone.
Lastly, I remember my email I used for the Samsung account however it was an outlook email and it gave me so much trouble trying to log in (even when the phone was fine). However, if I am able to get in do you think it would take the message off the screen? I know my directional lock to get back in. All I need to do is get back to that screen but it won't pop up.
Again seriously.... I thank you so much for trying to help!
Click to expand...
Click to collapse
i doubt that the samsung repair shop would be able to do anything for your data. but i guess it might be good to give them a call and explain the situation.
but i think they would basically do what was discussed earlyer using odin.
regarding the rest on how to get back in the phone I've never been locked out so i hope someone can chime in and see if there is a way to get it to prompt again or maybe have a remote unlock. co to samsung.com, login with your account that was used to setup the phone and check around. i know there is a remote dashboard on there to find your phone and do other commands remotely. i know for a fact that locking remotely exists. maybe its just as simple as having the phone online, lock it remotely and maybe the prompt will be seen on the device.( trigger it so to say)
good luck
bober10113 said:
i doubt that the samsung repair shop would be able to do anything for your data. but i gutess it might be good to give them a call and explain the situation.
but i think they would basically do what was discussed earlyer using odin.
regarding the rest on how to get back in the phone I've never been locked out so i hope someone can chime in and see if there is a way to get it to prompt again or maybe have a remote unlock. co to samsung.com, login with your account that was used to setup the phone and check around. i know there is a remote dashboard on there to find your phone and do other commands remotely. i know for a fact that locking remotely exists. maybe its just as simple as having the phone online, lock it remotely and maybe the prompt will be seen on the device.( trigger it so to say).
good luck
Click to expand...
Click to collapse
Thanks so much! I actually got locked out of my Samsung Account and my email so I called Samsung and they got
me right back in. The first person told me they couldn't do anything but then she gave me a number (855-795-0509) to call. She said it was for the "find my mobile" department so I could see if could unlock it. The second lady helped me get back into my account. She was a huge help! I was able to access the remote unlock but it didn't work. I guess because the phone isn't connected to data at all. Is there anyway to force it to connect to a network? I reinserted my sim so it would recognize my number and also so it would have data to connect.
My last option is to go back to the store and see if what he does can fix it. The lady at Samsung said that people have been reporting issues with this update so it wasn't just me. I literally have to keep these files or it could be my life. I have to edit video for a celebrity and a lot of it is on the internal memory. I had to put it there because I use Adobe Clip and it never finds files that are on my SD card. It is just easy to me because I can do it on the go and not have to carry around my laptop everywhere. Next time I will surely back it up somewhere. This is the first time I haven't.

A605FN Root/Recovery Questions

Hello!
I am new to this forum and also completely new to phone modding etc.
I will shortly explain what situation I am in so maybe someone can enlighten me a little so I know what to do.
A year ago I bought a phone on polish trading site called Allegro.pl, for months it worked without issues, it was a brand new phone.
A few weeks ago a message popped on screen telling me the phone is now locked due to failure in monthly payments. (Previous owner).
I tried all ways of contacting the seller but to no avail. His phone number is off, he does not answer e-mails.
I decided to just ditch the phone and use some old backup phone I had saved. The problem however is that the old phone died and right now I can't afford buying a new one.
Getting this phone into a working condition (without any lock) is my only option so here are the things I have done so far:
I have flashed the latest Android 10 Firmware but right after the initial set up is done (after recovery) the phone locks.
There is no window with the information anymore however, but I can't use any of phone's options or apps in anyway.
I have found a way to bypass that for a brief moment and managed to turn OEM lock off and Enable USB debugging.
(When phone asks for Wi-Fi network I used my old SIM card and told the phone to connect using SIM's connection and right after the initial setup is done I quickly unplugged the SIM so the phone has no connection to internet anymore and the lock didn't start right away. It took me a while to figure it out, been sitting in front of my PC up until 5 am last night.)
If I install TWRP and a custom rom will it bypass the lock on the phone and will I be able to use it normally again?
Will I have to change the firmware somehow, or what exactly will I have to do to make use of the phone again?
IMEI's appear to not be locked as of now.
Any help, information, advice on this subject will be greatly appreciated!

Headaches with an N950U

Hello all.
I got myself an used SM-N950U originally from Verizon and sold as unlocked. Now my problem is I cannot connect to/use my sim with it. Originally I thought it was locked since there's an app that says "not a Verizon sim", but then I realized this app is an userspace app so to say, part of the Verizon bloatware and doesn't mean the phone. I know specially since with that phone I also got an S10+ from a friend, also from Verizon, which does see and use my sim right and which also has that same message from the same app. But works well.
Now, I don't really have the option to return this phone, since it was shipped outside the US, and shipping back would cost me half as much as what the phone cost. So I'm on my own.
At least I'm resourceful, but not that knowledgeable so that's why I come here for help.
The phone diagnostics, for the network, says in a status line "Radio off". and no info on the network. and if I try to manually select a network on connection settings, I immediately get an error. This happens wether I'm using my local sim, the old deactivated Verizon sim from my friend, and no sim... since the phone should be abe by law to make emergency calls, and it should be able to see visible networks even if not to join them, it's my guess that rather than locked, it has the radio turned off, which in some web pages says can sometimes happen "for various reasons".
My problem is, as far as I know, I have no way to turn the radio off and on again to see if that boots it up. Since this VZW Pie from has no service codes available via dialer. Not even the most basic *#06# service menu.
I see there's supposedly a way to flash the firmware back to Nougat, and root that from, on This thread. I'm guessing if I can make that work (I hope it works) I can access the service menus somehow, with it being an older rom, and having root I can probably use "Phone INFO" to get to them and try to reset the radio.
But before I do all that, and since my firmware downloads, to update to a new firmware via odin (given the warning on the root page to not use a v8 bootloader that was updated from v7 to v8 via OTA but rather something with v8 flashed directly via Odin, to avoid a possible brick). and to install the rooteable nougat will take me days to download at my speeds, I take this time to ask for help on wether there's ANY way to check and flip the radio without having to go to Nougat and root (I think I can even be happy without root on Pie for a short while.)
Ok, I'm starting to think the power connector board got damaged or the connector partially disconnected during the shipping or something.
I've installed first a N950U1 xaa rom, to make sure the v8 was installed via odin and not OTA. Then loaded a combination from and rooted as per the root post shared in the first message. This one can use service codes with the factory time (I've not installed a normal rooted nougat rom yet, as I want to do tests beforehand and try to make the radio work).
Inside *#0011# My IMEI shows as passing, but I get an ASM MIPI DEVICE FAIL:
ASM MIPI DEVICE FAIL
DEVICE MOD=0x217 , PID=0x081
Non-Fatal MIPI DEVICE FAIL
DEVICE MOD=0x217 , PID=0x081
ASDiv : NOT SUPPORTED
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I tried running the Samsung Mipi Repair Tool, it detects the info, I hit repair, says it's repaired and that it'll open a menu, which does NOT open. Yet, if I open a menu with *#27663368378# and then rebuild NV with: 2. Ue Setting Info-->1.Setting-->2.System-->3.nv rebuid-->3.all, and then turn the phone off (Factory doesn't seem to have reboot) and on, still the same MIPI issue.
So I'm guessing either the board around the charge port got damaged somehow during the trip (my friend tested the phone before shipping it to me from the US), or the connector for it got loose. Anyway, I'm worried I'll have to open the phone myself (I haven't found a trustworthy tech in here. Last time I took a phone to a "recommended" tech, they stole the OEM screen from my dad's J8. So, no more techs for me unless I can find one I can befriend, and trust). If the connector to the board is not lose (I'll reseat it) I'll have to look for a new board, either abroad or here, probably not oem and with a lousier usb-c port, and swap the boards... sigh.
Anyhow since this will take time, if anyone knows of any other program or procedure I can use to test things, please let me know. I will keep the factory rom on the phone, either as the sole one or in a rom slot in safestrap, so that I can keep doing tests.
I appreciate any hints or help anybody could provide.

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