I need some help with getting back to unlocked firmware. - Samsung Galaxy Note 8 Questions and Answers

I recently made an insurance claim for my phone and had to send my unlocked firmware note 8 back. Problem I'm having now is, I cant get the new one on an unlocked firmware. I keep getting errors in all the Odins I have. I dont know much about the v4 bootloader or when it was locked. I was able to gi back to Nougat on my old phone and then upgrade back oreo. That was in August though. Any help would be appreciated. I cant stand this ATT ****!

cameronw2023 said:
I recently made an insurance claim for my phone and had to send my unlocked firmware note 8 back. Problem I'm having now is, I cant get the new one on an unlocked firmware. I keep getting errors in all the Odins I have. I dont know much about the v4 bootloader or when it was locked. I was able to gi back to Nougat on my old phone and then upgrade back oreo. That was in August though. Any help would be appreciated. I cant stand this ATT ****!
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You can only flash the same bootloader v4 firmwares or higher from now on. No downgrading possible to bootloader v3 or below!
Can't even go back to Nougat (that was on bootloader v3 and below)!
If you are just need the unbranded firmwares look for the ones with the bootloader v4.
Eg N950U(U1)SQS"4"CRH1. The 4 in "" is your bootloader version.
If you want to root or go back to nougat then you'll need to talk to ATT for another phone that's on bootloader v3 or below.

BluePhnx said:
You can only flash the same bootloader v4 firmwares or higher from now on. No downgrading possible to bootloader v3 or below!
Can't even go back to Nougat (that was on bootloader v3 and below)!
If you are just need the unbranded firmwares look for the ones with the bootloader v4.
Eg N950U(U1)SQS"4"CRH1. The 4 in "" is your bootloader version.
If you want to root or go back to nougat then you'll need to talk to ATT for another phone that's on bootloader v3 or below.
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Could you possibly link me the the firmware I do need? I would really appreciate as I'm stuck on this current firmware. I've looked and looked. I'm just unable to find the right firmware. I suppose it's possible I'm not getting the right one. Idk.

cameronw2023 said:
Could you possibly link me the the firmware I do need? I would really appreciate as I'm stuck on this current firmware. I've looked and looked. I'm just unable to find the right firmware. I suppose it's possible I'm not getting the right one. Idk.
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The easiest is to use SamFirm to download the firmware. Then use modified ODIN 3.13.1 to flash it.

Mr. Orange 645 said:
The easiest is to use SamFirm to download the firmware. Then use modified ODIN 3.13.1 to flash it.
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I figured all out! I managed fo flash the latest unlocked without any issues.

Related

Another bootloader question

Ok, so pretty everyone here has heard of the supposedly upcoming jellybean update as well as an incoming bootloader unlock for euro open O4Xs. I bought this phone unlocked from amazon. Bottom line- it has a Taiwan branded stock rom on it. Does anyone think there'll possibly be a chance I will have my bootloader unlocked too or should I just not get my hopes up?
Anyone?
juanacevedo said:
Anyone?
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you'll just have to flash the EU-open firmware before unlocking the bootloader. that's it.
saptemai said:
you'll just have to flash the EU-open firmware before unlocking the bootloader. that's it.
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that is something i was wondering. Is the bootloader on the firmware?
Probably we'll can flash jb with new bl via kdz like another firmwares
I hope in february
Just flash an euro open firm...
Hello.
I bought my phone from amazon too, and i just flashed the newest firmware via kdz because the update wasn't available via OTA. My phone is also branded TW but it is just working great. You won't have problems.

Stock G900a downgrade from Marshmallow to Lollipop

Searching via cell isn't great for me at the moment. I've found a few threads with lollipop files to use in Odin. But I haven't read anything that says it's simple to flash them and downgrade properly from Marshmallow to Lollipop. Is there a tutorial/file thread already on here that I am missing via search? Is this something I can do without rooting?
Da hell is that chipmunk woman
Sammobile doesn't have the stock 5.1 firmware.. is that an omen against downgrading?
Most of the posts ive read are indicating Marshmallow is not able to be downgraded, bootloader locked.. looks like a dead end
It's a different boot loader, will not be able to downgrade. There is no root option at this time as well.
johnkirchner said:
It's a different boot loader, will not be able to downgrade. There is no root option at this time as well.
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sorry, but i disagree. i just flashed from 6.0.1 to 5.1.1 using odin and firmware found here on XDA. I have no problems with phone so far.
At the time of my post months ago, this was not possible. It is very possible now, I have also done it.
gooch1006 said:
sorry, but i disagree. i just flashed from 6.0.1 to 5.1.1 using odin and firmware found here on XDA. I have no problems with phone so far.
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This is for the AT&T model, I haven't been able to crack into mine. I have battery issues since marshmallow and want to go back to 5.1.1 as well... where did you get the files, and what process did you use?
Downgrade instructions can be found here:
http://forum.xda-developers.com/showthread.php?p=67323522
johnkirchner said:
Downgrade instructions can be found here:
http://forum.xda-developers.com/showthread.php?p=67323522
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Thanks for the link, i had searched without luck on my own.
https://forum.xda-developers.com/att-galaxy-s5/general/guide-merry-christmas-heres-t3516196
following this guide for rolling back to LP, work for me downgrade from MM and getting root on LP.
Mine didn't... version DPH4, october 1, 2016 security patch, odin gave me an error something like level 4 > 3 and didn't start the reflash process. I was able to reflash the same 6.0.1 and its not the same as what was on there, so maybe the ota updates had a problem? I'm still locked out of downgrading.
Mine also from DPH4 oct 1, 2016. Having issue with lte, i cant receive call but i can make call. So im rollback to COI5 and follow the instruction from page 2. Get odin 3.11.1 to flash BL,AP,etc. Have you try with other usb cable?
kecel said:
Mine also from DPH4 oct 1, 2016. Having issue with lte, i cant receive call but i can make call. So im rollback to COI5 and follow the instruction from page 2. Get odin 3.11.1 to flash BL,AP,etc. Have you try with other usb cable?
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i had that issue at one point, i just flashed the CSC and CP again and it worked.. Idk if it's that simple for you guys tho..
g900a downgrade from 6.0.1 to 5.1.1
djs2571 said:
This is for the AT&T model, I haven't been able to crack into mine. I have battery issues since marshmallow and want to go back to 5.1.1 as well... where did you get the files, and what process did you use?
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i also have the at&t model, but used some info in this post: https://forum.xda-developers.com/att-galaxy-s5/general/guide-merry-christmas-heres-t3516196
i used odin to flash full OI5 firmware, minus the bootloader file. Only use the AP, CP, and CSC files. the bootloader is the same. and really, i had already flashed the PA2 build earlier that day i remember now. would probably do that first. flashing the PA2, i used all four files, BL, AP, CP, and CSC . they both flashed the first time, if they dont then try a different cable first. usually that is my issue.
so , i flashed from 6.0.1 down to 5.1.1 pa2, then down to oi5. still have no problems other than getting root..... im focusing on bootloader now, i have unlocked them on htc's before, but havent tried any other phone yet. the work continues tonight.

cant flash stock in odin

guys need a question. i have already upgraded my phone to this firmware (N9208XXS4CRA1). then i intstall twrp and flash custom rom. now i want to go back to stock but my back up odin flashable firmware is
N9208XXS3CQJ1_N9208OLB3CQJ1_N9208XXU3CQG2_HOME.tar. now i cant flash it coz of error. do i neeed to download the latest firmware or there is something wrong with my phone. coz i cant restore my twrp back up if i flash twrp again. hope someone can help.
pattriccio said:
guys need a question. i have already upgraded my phone to this firmware (N9208XXS4CRA1). then i intstall twrp and flash custom rom. now i want to go back to stock but my back up odin flashable firmware is
N9208XXS3CQJ1_N9208OLB3CQJ1_N9208XXU3CQG2_HOME.tar. now i cant flash it coz of error. do i neeed to download the latest firmware or there is something wrong with my phone. coz i cant restore my twrp back up if i flash twrp again. hope someone can help.
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You cant flash a firmware with a lower bootloader number. The fifth digit from the right is the bl version. You are trying to flash a firmware with bl version 3 over you're current version 4 so just flash a firmware with version 4 and you should be good.
bsharp8 said:
You cant flash a firmware with a lower bootloader number. The fifth digit from the right is the bl version. You are trying to flash a firmware with bl version 3 over you're current version 4 so just flash a firmware with version 4 and you should be good.
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thanks mate. problem is every firmware im downloading right now always corrupt. and very slow. but thanks anyway for the help and knowledge.
thanks mate i changed pc and got a successful download.
No problem glad you got it worked out.
Never ever try to downgrade your bootloader to go to an older rom by the way. I tried it and had to replace my phones motherboard.just fyi

Secure check fail Modem on boot

Hi my note 8 won't boot no Samsung logo just flashes in red "secure check fail Modem" then blue screen security error phone is locked. Would much like to have it back to working order. All started after flashing samfail.
Satellizer420 said:
Hi my note 8 won't boot no Samsung logo just flashes in red "secure check fail Modem" then blue screen security error phone is locked. Would much like to have it back to working order. All started after flashing samfail.
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Check out the samfail thread. They can help if the answers aren't already posted there.
No help there I think I'm screwed unless they find away to unlock snapdragon bootloader or some way to downgrade from rev3 to 1 or a remove/bypass solution.
No help there I think I'm screwed unless they find away to unlock snapdragon bootloader or some way to downgrade from rev3 to 1 or a remove/bypass solution from download mode.
Satellizer420 said:
No help there I think I'm screwed unless they find away to unlock snapdragon bootloader or some way to downgrade from rev3 to 1 or a remove/bypass solution from download mode.
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Can you access download mode and flash stock firmware?
I can get into download mode yes but I'm stuck on rev3 and the only stock is rev1
Satellizer420 said:
I can get into download mode yes but I'm stuck on rev3 and the only stock is rev1
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Oh I see...hasn't rev3 been out for a while though? If so, I'm surprised it's still not available through SamFirm or Sammobile as it usually only takes a few days to appear there (iirc). I have Exynos so maybe I'm missing something...
Only firmware for SM-N950XU is rev1 and that was a hassle to obtain in the first place sammobile dose not even host it on there site...
Satellizer420 said:
Only firmware for SM-N950XU is rev1 and that was a hassle to obtain in the first place sammobile dose not even host it on there site...
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Ahh it's a demo model? I can't really help there... From where I read they are live demo units not intended for resale.
Does that really matter Its legit I bought if for gaming purposes only no intention of using it as a working phone all I want is it to Be able to boot into the os.
Satellizer420 said:
Does that really matter Its legit I bought if for gaming purposes only no intention of using it as a working phone all I want is it to Be able to boot into the os.
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It can't be very legit if you bought something that shouldn't actually have been sold in the first place! Either way, these are not retail models so I honestly have no idea where to get the firmware for them.
I have stock firmware for it but it's rev1 I'm rev 3 from my own carelessness sadly
Satellizer420 said:
Only firmware for SM-N950XU is rev1 and that was a hassle to obtain in the first place sammobile dose not even host it on there site...
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Do you still have the firmware?
hi
abctablet said:
Do you still have the firmware?
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I have a solution for you, write me a telegram
 @allmorerd

Can I downgrade from March 2019 pie to last oreo android firmware and if so how? (T m

I coasted by for months not upgrading my note 8 because I heard bad things about pie on note 8. Well this morning I accidentally hit install now instead of backing out of it. Can I downgrade back to the final last version of oreo stock firmware? Here's my software info.
Can I and if so how to downgrade to tmobile note 8 oreo? https://imgur.com/gallery/puzXavA
Thank you very much.
Tmansdc said:
Can I downgrade back to the final last version of oreo stock firmware?
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I don't have the "how to" answer for you. However, since you aren't on AT&T's locked bootloader, you can downgrade to any stock ROM you like. In either case, backing up your data, is a must.
Anonymously_Unknown said:
I don't have the "how to" answer for you. However, since you aren't on AT&T's locked bootloader, you can downgrade to any stock ROM you like. In either case, backing up your data, is a must.
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Click to collapse
What is wrong with my phone/odin? What am I doing wrong?
https://imgur.com/a/Krs3cgS
Tmansdc said:
What is wrong with my phone/odin? What am I doing wrong?
https://imgur.com/a/Krs3cgS
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Click to collapse
You can only downgrade if you use the same bootloader version you're on bootloader version 5 so you cannot try to flash any bootloader version below 5 it must be 5 or above! @Anonymously_Unknown is incorrect when he stated your bootloader isn't locked because your bootloader is locked unless you have the F version which you don't have. You have the American version not the international F version. Also you need to use the newest version of Odin available.
Thanks for the clarification

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