I'm on the latest Nougat modem for S6 G920t, G920TUVS6FRA3, and I want to downgrade that modem (causing compatibility issues with Oreo AOSP roms I believe) but every time I do try to downgrade in Odin with CP, I'll boot back in and Baseband will be Unknown and I'll have an Unknown IMEI and no data
Is downgrading not possible or will I have to Downgrade something else as well? Like the bootloader?
I also need to know this. Anyone please help.
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Hi,
I have a G920F, I was rooted and want to go to stock again. I have restored the device with Smart Switch, but now I am unable to flash any other rom. I have downloaded 3 different roms from Sammobile and get sw. check failed device 3 binary 2 at everyone. The current rom is form Italy Wind the latest OI9. Any suggestions?
Thanks in advance.
Hi, probably you trying to install oldest firmware 5.0.1, download the latest firmware and try again. You are with 5.1, right? This error on odin happens, because you cannot downgrade the firmware. Hope this helps.
I think you can not downgrade even if it is the same Android version.
If it detects you are on a newer bootloader it will give you that error.
What I belive you can do is to extract the bootloader (sboot) and modem from the .tar file and flash ONLY the system through Odin.
Don't know exactly how to do that because I haven't done it but I think that would do; you will have to search and read my friend.
You will have the stock firmware but with latest bootloader and modem.
Hope this helps.
Note: As far as I know this will work if its the same Andorid version; you can not have Android 5.0.2 with 5.1.1 bootloader.
jpdediego said:
I think you can not downgrade even if it is the same Android version.
If it detects you are on a newer bootloader it will give you that error.
What I belive you can do is to extract the bootloader (sboot) and modem from the .tar file and flash ONLY the system through Odin.
Don't know exactly how to do that because I haven't done it but I think that would do; you will have to search and read my friend.
You will have the stock firmware but with latest bootloader and modem.
Hope this helps.
Note: As far as I know this will work if its the same Andorid version; you can not have Android 5.0.2 with 5.1.1 bootloader.
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Hi,
I have tried what you said, but no succes. The firmware was already recovered with smart switch so the bootloader is the latest.
raj_p said:
Hi,
I have tried what you said, but no succes. The firmware was already recovered with smart switch so the bootloader is the latest.
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Click to collapse
But did you try to flash without the bootloader and modem?
Hello I was just wondering when i go to unlock a new security Samsung running 6.01 or higher
I always encounter error saying try to downgrade modem if possible
I know how to flash phone to downgrade OS to 5.1
But problem is most of these flash files for newer phones do not have flash files for downgrading to 5.1
My question is i read somewhere you can just temporarily downgrade your modem only
Where can i get these downgraded modem files and are they different then full flash 5.1
I am also not sure which option to choose when I open Odin TO DO MODEM ONLY BL AP CP oR csc
Thank you in advance
XDA Visitor said:
Hello I was just wondering when i go to unlock a new security Samsung running 6.01 or higher
I always encounter error saying try to downgrade modem if possible
I know how to flash phone to downgrade OS to 5.1
But problem is most of these flash files for newer phones do not have flash files for downgrading to 5.1
My question is i read somewhere you can just temporarily downgrade your modem only
Where can i get these downgraded modem files and are they different then full flash 5.1
I am also not sure which option to choose when I open Odin TO DO MODEM ONLY BL AP CP oR csc
Thank you in advance
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Hello,
Please register for XDA account to post as well as reply in the forum.
Please tell us the make and model of your device.
Regards
Vatsal,
Forum Moderator.
Modem needs to be downgraded for ZX3 unlock box to unlock s7 phones or 6.1 OS
Hello I was just wondering when i go to unlock a new security Samsung running 6.01 or higher
I always encounter error saying try to downgrade modem if possible
I know how to flash phone to downgrade OS to 5.1
But problem is most of these flash files for newer phones do not have flash files for downgrading to 5.1
My question is i read somewhere you can just temporarily downgrade your modem only
Where can i get these downgraded modem files and are they different then full flash 5.1
I am also not sure which option to choose when I open Odin TO DO MODEM ONLY BL AP CP oR csc
Thank you in advance
Hey Guys
i was running on Nougat latest may security patch on my device but I wanted to Downgrade to Marshmallow
Here is my phone model number
Model S6-g920F
I downloaded firmware from latest marshmallow firmware from Sammobile and tried to flash through Odin
After successfully completing the flash the phone is on bootloop.
Can anyone tell me how to downgrade without causing a bootloop
Hi,
Im interested in flashing stock G930U rom on G930V phone. Do i need to modify bootloader / anything else before flashing with Odin?
Thanks!
apex88 said:
Hi,
Im interested in flashing stock G930U rom on G930V phone. Do i need to modify bootloader / anything else before flashing with Odin?
Thanks!
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I noticed its the wrong forum. apologies.
no. i was on U firmware from my previous ATT firmware version without unlocking the bootloader (and i think that is impossible for US version) and without modifying anything.
I was able to successfully flash G930U firmware on G930V phone using Odin. didnt need to open anything or to do modifications prior to flashing.
Yep, stock firmware doesn't require an unlocked bootloader unless you're downgrading. The snapdragon models also can't be bootloader unlocked anyway.