Hi, I've got this one Note 4 that's had loads of trouble presumably since the last security update.
Baseband Version: N910AUCS2EQD1
Android: 6.0.1
Have seen the instructions and all as to how to go about downgrading BUT one site I came across with the original stock firmware downloads outright state how:
""DO not ever try to downgrade from any newest Android 6.0.1 Marshmallow updates back to an older 6.0.1 build version""
'and so I'm lost. Should trying to then reinstall the same Baseband version atop what's already there a good first alternative? ...that is, just in case it was never upgraded properly in the first place? Or is that not even possible?
Is trying to downgrade at all a futile pursuit?
Would truly appreciate any suggestions, help, direction...heck, anything! Thanks in advance.
I downgraded from 6.0.1 epk5 to 5.1.1 with no problem.
Not sure about qd1.
As long as you have the odin firmware, I see no problem.
Can i downgrade note 4 n910a from marshmallow to lollilop,please help me i am in great trouble because marsmallow update is very bad with a lot of reboot issue ,battery drain.
Once you are on QD1 you will not be able to go back to anything lower than that firmware. The bootloader is now at the latest version and has blown one of those imaginary "e-fuses" so that you can not go back in time to any other vulnerable OS. I just tried today to go from EQD1 to EPK5 and It would not flash and would fail every time whilst using the latest Odin. So good luck on finding anything on getting you back to another firmware version but at this time I do not believe there is anything that will move you back to the firmware you want. If you do happen to find something or make your own exploit do tell @sanaullahkhan371 If you are on QD1 you are not going to be able to downgrade if you are on PK5 you can try the Odin downgrade method that will5 presumably used but if you are not in this firmware use case you are SOL.
will5 said:
I downgraded from 6.0.1 epk5 to 5.1.1 with no problem.
Not sure about qd1.
As long as you have the odin firmware, I see no problem.
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Click to collapse
Hi,
Can you please let me know how did you downgrade? Is it straight away flash to 5.1.1 or did you follow any steps?
I am also planning to downgrade. Anyways, I stopped using Note 4 after update to 6.0.1 as it was switching off every now and then due to update. Might as well make this phone usable to take photos and as a video player for my kid
Thanks
roxster said:
Hi,
Can you please let me know how did you downgrade? Is it straight away flash to 5.1.1 or did you follow any steps?
I am also planning to downgrade. Anyways, I stopped using Note 4 after update to 6.0.1 as it was switching off every now and then due to update. Might as well make this phone usable to take photos and as a video player for my kid
Thanks
Click to expand...
Click to collapse
I just odin to this firmware N910AUCU2DOI2-5.1.1 It s available somewhere on this forum.
Read how to odin if you never used it. In this case you need to unzip the file and load AP, BL, CP and CSC files on odin and flash.
Was running 6.0.1 epk5 previously.
will5 said:
I just odin to this firmware N910AUCU2DOI2-5.1.1 It s available somewhere on this forum.
Read how to odin if you never used it. In this case you need to unzip the file and load AP, BL, CP and CSC files on odin and flash.
Was running 6.0.1 epk5 previously.
Click to expand...
Click to collapse
Thanks a lot buddy! :good:
My note 4 was also running on 6.0.1 EPK5. Found the 5.1.1 firmware and followed your instructions to downgrade. My phone came back to life and is usable now.:victory:
No more switching off abruptly! I wont update anymore since all the apps which I use are working fine with current version of Android.
braindead444 said:
Once you are on QD1 you will not be able to go back to anything lower than that firmware. The bootloader is now at the latest version and has blown one of those imaginary "e-fuses" so that you can not go back in time to any other vulnerable OS. I just tried today to go from EQD1 to EPK5 and It would not flash and would fail every time whilst using the latest Odin.
Click to expand...
Click to collapse
Were you ever able to flash back to an older version from QD1? Others have said that the bootloader was not incremented in QD1.
spocko said:
Were you ever able to flash back to an older version from QD1? Others have said that the bootloader was not incremented in QD1.
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Click to collapse
Were you able to downgrade from EQD1 to 5.1.1? I am on EQH1 and I am not able to downgrade
somani09 said:
Were you able to downgrade from EQD1 to 5.1.1? I am on EQH1 and I am not able to downgrade
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Click to collapse
I'm also on EQH1. I have never tried to downgrade. I was just curious if it was possible, in case a root method was discovered that only worked on older versions. But I've just learned to live without root. EQH1 works fine for me.
I had the infamous freeze/reboot/shutdown issue with 6.0.1 and I wasn't sure if that was the issue but I downgraded to 5.1 and have fewer issues now. The phone runs just fine, except it does not reboot. You have to do a soft reset every time. But with the Wakelock app, at least it runs.
roxster said:
Thanks a lot buddy! :good:
My note 4 was also running on 6.0.1 EPK5. Found the 5.1.1 firmware and followed your instructions to downgrade. My phone came back to life and is usable now.:victory:
No more switching off abruptly! I wont update anymore since all the apps which I use are working fine with current version of Android.
Click to expand...
Click to collapse
Hi can i ask if u still have that firmware file
Hi everyone got a good deal on an S7 Active so I just upgraded from my S6 Active.
I noticed we have the first Nougat release Odin files QB2, but there have been 3 OTA updates since.
Does anyone have a newer Odin image file? QE1 would be awesome, but even QD4 or QC2 would be nice.
Thanks!
In fact, we can get full firmware until QD4, but it isn't for free, so I just download the QB2 for everyone to update to Android N. Then you'd better update your phone to the latest verion by OTA files on SD card, it isn't comfortable but for free.
Hi, i tried updating my android phone with the latest security patch from TMobile. I was on Android 8.0 and when i went to update it, the phone restarted and now i get the message.
"Security Error: This phone has been flashed with unauthorized software * is locked. Call your mobile operator for additional support. Please note that repair/return for this issue may have additional cost."
The problem is i have never flashed this phone whatsoever. i did obtain it via a warranty exchange and udpated it from android 7.0 to android 8.0 and it worked fine. I am not sure why this happened.
Anyway, i tried downloading the ODIN firmware file for 8.0 from the updateto website
Specifically: htt ps:/ /updato.com /firmware-archive-s elect-model?rec ord=EEDFC92B2E0611E89F15FA163EE8F90B (get rid of spaces)
But it only contains the March 20th, 2018 firmware file (which i believe is the original 8.0)
because i had updated past that i need a more recent odin flashable firmware.
When i try to flash the CRB9 firmware i usually get error (abl) Fused 3 > binary 2 or (bootrom) fused 2 > binary 1
I believe my problem is i am attempting to downgrade the OS version. So i need a more updated ODIN firmware file.
i looked at this url
htt p://fota-clou d-dn.ospserver. net/firmware/T MB/SM-G955U/versio n.test.x ml (get rid of spaces)
and found that the latest firmware is G955UOYN3CRD9/G955USQU3CRD9
Does anyone know where i can get this odin firmware file so i can reflash my phone and get it working again?
Which firmware you are on?
There's U3CRD4 update available to download.
i was on android oreo. Thankfully T-mobile said it was under warranty and replaced my phone!
have anyone faced this problem ?
i have an at&t variant it was on 6.0.1 and i manually upgraded to stock 7.0 now those factory codes are not working but they were working in 6.0.1
and can anyone also help me with the knox problem the s-health saying that it won't run on a rooted phone i didn't root it i just installed official firmware manually.
Hello,
I have been on BPA1 for a long time for a number of reasons, mainly I was afraid to upgrade and lose the ability to unlock the bootloader if I eventually wanted to do that. I disabled the OTA update notification and service a long time ago. But I am ready to upgrade now because I want WiFi calling on 6.0.1 and many apps are stopping support for 5.1.1.
I have looked around at these forums and I think I understand how to upgrade to 6.0.1, but I would appreciate an idiot check.
Current status:
Fully stock 5.1.1 N910VVRU2BPA1 Firmware
Goal:
Fully stock 6.0.1 N910VVRU2CQL1
Proposed steps:
Download and extract ODIN: ODIN3-v3.13.3.zip
OTA Update from N910VVRU2BPA1 to N910VVRU2CPD1: https://www.androidfilehost.com/?fid=24572369360126104
Flash N910VVRU2CQL1: (have not found this file yet)
I have a couple of questions about this:
Will this wipe the data on my phone (e.g. installed apps, settings, etc.)?
If so, is there any way to get to CQL1 without having to wipe my phone?
Am I missing anything?
ScheissSchiesser said:
Hello,
I have been on BPA1 for a long time for a number of reasons, mainly I was afraid to upgrade and lose the ability to unlock the bootloader if I eventually wanted to do that. I disabled the OTA update notification and service a long time ago. But I am ready to upgrade now because I want WiFi calling on 6.0.1 and many apps are stopping support for 5.1.1.
I have looked around at these forums and I think I understand how to upgrade to 6.0.1, but I would appreciate an idiot check.
Current status:
Fully stock 5.1.1 N910VVRU2BPA1 Firmware
Goal:
Fully stock 6.0.1 N910VVRU2CQL1
Proposed steps:
Download and extract ODIN: ODIN3-v3.13.3.zip
OTA Update from N910VVRU2BPA1 to N910VVRU2CPD1: https://www.androidfilehost.com/?fid=24572369360126104
Flash N910VVRU2CQL1: (have not found this file yet)
I have a couple of questions about this:
Will this wipe the data on my phone (e.g. installed apps, settings, etc.)?
If so, is there any way to get to CQL1 without having to wipe my phone?
Am I missing anything?
Click to expand...
Click to collapse
follow here
https://forum.xda-developers.com/no...t/howto-bootloader-unlock-upgrade-to-t3398144