How to roll back to Oreo from Pie S8 - Samsung Galaxy S8 Guides, News, & Discussion

With the new betas coming out there is defetly going to be a few people that are going to soft brick their devices installing them. Just like I did today.
Fortunatly I foundd the right firmware after a few hours of searching.
If you have flashed Firmware: ZSB9 from the Beta 4 and if for what ever reason you are locked out this firmware should do the trick
All you need to do is flash it with Odin and you will be back on the Sweet Oreo
https://downloadmirror.co/2CXa/G950...=PenBZarskgIE5yLPnGWXnkOiyh1wEN3+9SoikF+t1dE=
This is for the S8 G950F

So nothing special is needed?
Just install oreo over pie like .... if I wanted to install stock os?

Related

//G892A\\ Odin full restore files with data and pit *G892AUCS2ARB1*

Hi everyone. I get this RB1 full package when we waiting official 8.0... once I thought that this version was Oreo, but after downloading that only a Security patch. Maybe someone need it.
https://mega.nz/#!0UBGha7K!Blm-PB5erb-z2n-HMjPLAssaDVswp9Z1Cjjn5GiPto0
Let's waiting oreo together. People who at RA1 now needn't flash it, I thought official oreo can OTA from both RA1 and RB1.

Manually updating to Oreo

Hi.
I have a G955U Galaxy S8+ AT&T Factory Unlocked on Android 7.0
Baseband Version: G955USQU1AQD9
Android Security Patch Level - April 1, 2017
I no longer live in the US, and currently in the Philippines. Phone works great and the signal is too and all, but I cannot get OTA updates.
Can I just download the firmware file in this thread and flash straight through ODIN, or do I need to follow another guide?
Thanks in advance
You can, however there are specific sequences to follow, so you have to update in firmware released order.
I encountered the same problem so I downloaded odin that worked for Nougat and loaded all version to BRB1 I think it is and then went to Oreo. Currently on CRC5.
Another note, when you are about to hit Oreo you will need to download the odin that works for Oreo. It can be found in the CRC5 thread.
Happy Updating
onedonrazor said:
You can, however there are specific sequences to follow, so you have to update in firmware released order.
I encountered the same problem so I downloaded odin that worked for Nougat and loaded all version to BRB1 I think it is and then went to Oreo. Currently on CRC5.
Another note, when you are about to hit Oreo you will need to download the odin that works for Oreo. It can be found in the CRC5 thread.
Happy Updating
Click to expand...
Click to collapse
Is this really necessary?
I want to update to Oreo as well but since I'm AT&T unlocked and not currently using AT&T network I'm stuck in the June software update so I'll have to flash like 7-8 firmware updates and each one being about 2-3 GB to download.
Also, is there any stock Samsung firmware I can download so I can avoid having to manually flash every software update? Or am I just stuck with the AT&T firmware?
Thanks in advance.
I'm also having this problem. Need to flash the updates through ODIN but I can't find every single stock file leading up to BR9 on this site. Do I really have flash them all? Or is there another way?

Trouble Flashing Samsung S7 to Android 7.0

Hey so.. Phone's root bugged out yesterday and I downloaded twrp and decided I should upgrade it to Android 8.0 then root it. After many hours of failures I managed to flash a 8.0 but I couldn't make the CSC to work, since my phone is region locked to another country so I decided to go back to 7.0 and try again.. but now here it gets complicated because I really don't know what to do. I'm not sure how exactly to go back from 8.0 to 7.0.. Can someone give me detailed steps on what should I do.. I'd be very grateful!
PS. I don't know if I'm posting this in the right forum thread.
Here https://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin
Same site, or sammobile can be used to get the firmware files to flash with Odin
Note: The last version of 7.0 locked the ability to downgrade, I haven't gone to Oreo so can't confirm, but it ability to downgrade may also be removed from Oreo.
Beanvee7 said:
Here https://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin
Same site, or sammobile can be used to get the firmware files to flash with Odin
Note: The last version of 7.0 locked the ability to downgrade, I haven't gone to Oreo so can't confirm, but it ability to downgrade may also be removed from Oreo.
Click to expand...
Click to collapse
I can confirm, downgrading from Oreo 8.0 to Nougat 7.0 is possible, even without tripping knox.
It's just flashing the previous firmware with odin and factory reset the phone before first run and you're fine to go

Downgrade Oreo to Nougat.

I bought the unlocked USA version of the S8+ (SM-G955U1), and it came stock with Oreo/8.0. I've tried multiple times to flash firmware with Nougat so that I can downgrade and root, because all other firmware for Oreo doesn't work. I don't know if the process is unsuccessful for me because the phone wasn't ever updated from 7.0 to 8.0 or what, but at this point I'm willing to resend this phone and just the Internantional/Exynos version if nothing else works.
Thanks for the help regardless.

Go back to oreo from pie

No baseband imei or service try this.
I HAVE SUCCESFULLY WENT BACK FROM PIE TO OREO ON S9 PLUS.Tried just going back to newest firmware it didn't work phone would loose sim card access.So i found that by flashing SM-G965U_G965USQS3ARI6_Official Firmware. Then immediately after flash go to recovery and do the update from sd to ari6 to brj3 then let it update sim now detected.Back on oreo now everything working again.Let me know if this helps anyone.
Required files https://samsung.firmware.science/download?url=52759/1488/SS-G965USQS3ARI6-to-U3BRJ3-UP
Thanks to rmarinella Found ARI6 Here https://forum.xda-developers.com/galaxy-s9-plus/how-to/sm-g965u-g965usqs3ari6-sm-g965u1-t3853429
Modded ODIN also FOUND THERE
do you know if this will work on sprint samsung s9 plus?
upgraded to pie using ota and tried to downgrade using this method on my ATT s9 plus. didn't work for me.

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