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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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?
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
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.
I had a bit of trouble installing Pie on my device. Since I have AT&T and AT&T devices do not get beta updates (the betas are internally tested by AT&T staff), I had to flash an unlocked U1 firmware to get the update. When I flashed the newest firmware for U1 using the modded Odin by Raymond, my phone legitimately bootlooped on the Samsung start-up screen. I, then, wiped the cache, /data and mounted the /system directory, and rebooted the phone. Voila! I was on Android 8.0.0 for U1, and then I signed up for the beta program through Samsung+ (I had to sideload the newest beta version of Samsung+). Within 20 mins, I manually checked the software updates and Pie was ready. And everything went smoothly after that.
Some steps to flash U1 Firmware
- Use Modded Odin
- Get correct firmware with the same or newer bootloader for your device
- Try updating the firmware using an OTA.zip file from SD Card or through adb sideload
Best of luck to all AT&T customers rearing to get Pie.
Hey there, also on an AT&T S9+ locked device. Currently on BRJ5. Am I correct in reading that we have no choice but to wipe data to update?
JewishMatt said:
Hey there, also on an AT&T S9+ locked device. Currently on BRJ5. Am I correct in reading that we have no choice but to wipe data to update?
Click to expand...
Click to collapse
Yes. You have 2 options.
1. Flash to U1. That requires a wipe. Sign up for beta.
2. Side load the builds. You'll need to be on ARIB. You can Odin to ARIB or in my case, I Odin to ARI6, and sideload to ARIB, then sideload to K9 build.
ATT causes a wipe every time you side load. So if you stay on the U firmware, every time a new beta is out, you get wiped. If you swap to the U firmware, the Beta will do an Ota, which does NOT wipe.
If you don't care about video calling, wifi calling or Volte (not 100% on that one), go to the U1 firmware and hope the beta isn't full.
We need an AT&T employee to drop the files up in here...
Perfect on my ATT s9+
so ive been trying to flash my phone back to stock but it fails in Odin every time. My phone is refurbished and unlocked. so i tried using tmoblie stock roms from early 2018 but none of them were successful my phone i'snt bricked the funny thing is when im in download mode it says my carrier is att even tho it boots with the tmobile boot screen i dont want to root i just want a clean flash back to 8.0.0 i just wondered if anyone has any input i have the samsung drivers and my Rom files ready to go it just wont work. Thanks in advance.
BeastyXV said:
so ive been trying to flash my phone back to stock but it fails in Odin every time. My phone is refurbished and unlocked. so i tried using tmoblie stock roms from early 2018 but none of them were successful my phone i'snt bricked the funny thing is when im in download mode it says my carrier is att even tho it boots with the tmobile boot screen i dont want to root i just want a clean flash back to 8.0.0 i just wondered if anyone has any input i have the samsung drivers and my Rom files ready to go it just wont work. Thanks in advance.
Click to expand...
Click to collapse
If you are trying to downgrade from 9.0 or 10.0 back to 8.0, you are out of luck because your firmware can't be downgraded. You can flash from older firmware to newer firmware but you can't go from newer back to older.
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