Is it possible to downgrade? - Samsung Galaxy S8 Questions and Answers

Hello, is it possible to downgrade SM-G955FD from Oreo to Nougat? I have bootloader U3.
Thank you

ToxicThing said:
Hello, is it possible to downgrade SM-G955FD from Oreo to Nougat? I have bootloader U3.
Thank you
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use odin

ToxicThing said:
Hello, is it possible to downgrade SM-G955FD from Oreo to Nougat? I have bootloader U3.
Thank you
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Click to collapse
No you won't be able to downgrade to nougat.

ToxicThing said:
Hello, is it possible to downgrade SM-G955FD from Oreo to Nougat? I have bootloader U3.
Thank you
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Downgrade is not possible. Only firmware listed in that Same revision 3 bootloader only

Related

Baseband Problems

My problem is that the baseband is unknown, I have flashed the firmware stock 6.0.1 and 7 and the problem continues, I have also flashed the NON-HLOS.bin and everything remains the same
My phone is Moto G4 Plus XT1644
Can anybody help me?.... btw I have another moto g4 xt1644 in 100% working condition in case that can help
Sorry for my bad english
_PaPaUpA_ said:
My problem is that the baseband is unknown, I have flashed the firmware stock 6.0.1 and 7 and the problem continues, I have also flashed the NON-HLOS.bin and everything remains the same
Can anybody help me?
Sorry for my bad english
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What was your firmware before flashing the 6.0.1 firmware? What baseband was shown? Which device model do you have?
Did you follow this guide to flash stock firmware 7.0 june security patch https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 ?
What was your firmware before flashing the 6.0.1 firmware? What baseband was shown? Which device model do you have?
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I do not know, because I bought it on ebay and already had the baseband problem
Did you follow this guide to flash stock firmware 7.0 june security patch https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138 ?
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Yes I did
_PaPaUpA_ said:
I do not know, because I bought it on ebay and already had the baseband problem
Yes I did
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did you tried to flash June Firmware ?
siddhesh9146 said:
did you tried to flash June Firmware ?
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Yes I did
_PaPaUpA_ said:
Yes I did
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https://mega.nz/#!RcglmbQY!SDmhLEDo9DGtSj03fArY1moKQlguKDywo5dYcr90uC4
Try to flash this Nougat baseband/radio in TWRP

Is it safe to update from Nougat 7.1.1 with bootloader unlocked

Is it safe to update from Nougat 7.1.1 with bootloader unlocked to oreo without softbricking the device or do I still have to lock the bootloader and then update?
Thanks in advance.
Murmal said:
Is it safe to update from Nougat 7.1.1 with bootloader unlocked to oreo without softbricking the device or do I still have to lock the bootloader and then update?
Thanks in advance.
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Maybe that's your instructions to start with if you have similar perquisites https://forum.xda-developers.com/oneplus-5/how-to/guide-upgrade-nougat-rooted-encrypted-t3734779

Downgrade

How to downgrade S7 Edge From Oreo to Noughat???
Azazlimbu said:
How to downgrade S7 Edge From Oreo to Noughat???
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Download Nougat or Marsh from sammobile and flash t with Odin, more instructions on sammobile.
downgrade only possible with V2 firmware files, don't flash any firmware build before the january 2018 or you will brick your device .
shah22 said:
downgrade only possible with V2 firmware files, don't flash any firmware build before the january 2018 or you will brick your device .
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I am new here i dont know what is V2 firmwarefile. Can you explain what is V2 firmware?? Thanks you for advise:fingers-crossed::fingers-crossed::fingers-crossed:
I mean the bootloader version that is written in the firmware name i.e in G935FXXU2DRAG, 2 is the bootloader version of the firmware after U letter and if you are already on version 2 bootloader, you cannot flash a firmware which has 1 in place of 2..
shah22 said:
I mean the bootloader version that is written in the firmware name i.e in G935FXXU2DRAG, 2 is the bootloader version of the firmware after U letter and if you are already on version 2 bootloader, you cannot flash a firmware which has 1 in place of 2..
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Ok Thanks you bro!!!!:fingers-crossed::good:
This is useful! I tried to downgrade from 8.0 to 7.0 and bricked my device, luckily I could restore the same version I had before... even SmartSwitch don't give a damn about my device anymore.
If you have bootloader version which says XXS2 then you can't downgrade to Marshmallow and initial Nougat firmwares released till December 2017.
However, if you never upgraded your bootloader to v2 (like me), then you can downgrade to even Marshmallow without any issues. Check my phone screenshot. I am running latest Oreo firmware on v1 bootloader without any issues.
AlanDS said:
I am running latest Oreo firmware on v1 bootloader without any issues.
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How you flash latest Oreo without flasing V2 bootloader? It is possible?

pie to oreo downgrade j730f

hi
how can we downgrade from pie to oreo j730f
and does it safe ?
any one test that?
ok ....
yesterday i tried to rollback to oreo 8.1 with this official rom (J730FXWS4BSD1_8.1.0)
and everything work fine.
I downgraded from pie to oreo without any issues.
zigbye82 said:
I downgraded from pie to oreo without any issues.
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ahmed10g said:
ok ....
yesterday i tried to rollback to oreo 8.1 with this official rom (J730FXWS4BSD1_8.1.0)
and everything work fine.
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link please
now my firmware u5

Downgrade Firmware from U9 to U4 for patch certs SM-G975F

Hey
I want to downgrade my Samsung galaxy S10plus SM-G975F.
My device was running on Android 9 and was IMEI repaired. But I just flashed it with Android 10 Latest firmware without knowing the circumstances and after the update the network are not working.
I searched and find that network patch can be done in U4 and below but I have flash it with U9.
Now I want to downgrade it to U9
Please help...
need u9
can you share where did you download u9 firmware for this g975f
Firmware location
chicknician01 said:
can you share where did you download u9 firmware for this g975f
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I have downloaded it from sammobile
No need to downgrade firmware patch cert is now working on latest security
Need Guidence
majinawaz said:
No need to downgrade firmware patch cert is now working on latest security
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Hello majinawaz, Can you please guide me or provide me any link ?
ahmermunaf said:
Hello majinawaz, Can you please guide me or provide me any link ?
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+1 @majinawaz
ahmermunaf said:
Need Guidence
Hello majinawaz, Can you please guide me or provide me any link ?
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Hi @ahmermunaf , did you find any solution?
Or @majinawaz can you provide a link to yours?
THX!

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