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I am trying to unroot my phone. I have a US version of G930A. Sammobile has every county except the USA. I found G930AATT1APB5_User_Binary.zip which has AP_G930AUCU1APB5_CL7193387_QB8719495_REV02_user_low_ship_MULTI_CERT.tar, the BL, CP and CSC file in it. I try to flash it using Odin3, and I get an "odin protocol version error." I take it because the image is a lower version that's what's on there. I would like to download the latest stock image but sammobile doesn't offer images for the US? Or is there a better way?
Wrong forum. This here is for SM-G930F Development, not Q&A. You'll get the answers you're seeking and more, at the S7 AT&T Q&A and Dev forums. Mod, please move - thanks.
Wrong forum. But try using Kies in Download mode
That is what i do when ever i restore my phone.
No Kies good lord. This isn't a Note 2.
You're getting that error because you're on newer firmware than you're trying to flash so it's erroring out.
Follow the Return to stock procedure in this thread:
http://forum.xda-developers.com/ver...sed-unroot-t3411039/post67605246#post67605246
Flash all 4 files, then you'll be on PF2 and able to get the OTA Update to PG1 with wifi calling, etc.
I tried using kies. It asks me for my model. I put in SM-G930A. The serial I put in all caps and it tells me my model number I entered is wrong.
joe3681 said:
No Kies good lord. This isn't a Note 2.
You're getting that error because you're on newer firmware than you're trying to flash so it's erroring out.
Follow the Return to stock procedure in this thread:
http://forum.xda-developers.com/ver...sed-unroot-t3411039/post67605246#post67605246
Flash all 4 files, then you'll be on PF2 and able to get the OTA Update to PG1 with wifi calling, etc.
Click to expand...
Click to collapse
I tried the instructions at http://forum.xda-developers.com/veri...6#post67605246 and I get "FAIL! Model dismatch fail"
dorlow said:
I tried the instructions at http://forum.xda-developers.com/veri...6#post67605246 and I get "FAIL! Model dismatch fail"
Click to expand...
Click to collapse
Which Odin are you using?
You're flashing the PF2?
I've tried many versions of Odin v1 (not the 3). I'm not sure what the PF2 is.
To get it to work, I just defaulted the phone and rerooted it. It's the only way I can get it to work. It's working perfect right now. Only question is how long,
dorlow said:
I've tried many versions of Odin v1 (not the 3). I'm not sure what the PF2 is.
To get it to work, I just defaulted the phone and rerooted it. It's the only way I can get it to work. It's working perfect right now. Only question is how long,
Click to expand...
Click to collapse
for g930a (galaxy s7 at&t NOT EDGE)
WARNING: YOU WILL LOSE ALL DATA MAKE A BACKUP
download these files:
Odin: http://www.mediafire.com/download/2t...din_3.12.3.rar
Flashing Files: https://drive.google.com/file/d/0B17...w?usp=drivesdk
After downloading extract the .rar extract it then extract each, BL, AP, ect... files. Use the odin included in the download to flash and you will be returned to stock. If the odin included still gives you the error you can get the princecomsey version and see if that works from here: http://downloadandroidrom.com/file/tools/ODIN/ODIN-modified.zip
If odin freezes or crashes just restart it and try again, it might take a while foor the AP file to load into odin so just be patient and if it looks like it is about to crash wait about 2-3 minutes then force close it and try again.
Now you are returned to stock an all set !!
(p.s) - PF2 is the latest firmware as of now for the g930a, meaning when you flash this you will be all set. You may have tried to flash the original PF which is now outdated cause AT&T updated it, I did this and it worked but i could not update my phone so I flashed this one and it works perfectly and Samsung pay is up and running.
Hello, so i was trying to downgrade my phone from android 6.0.1 to 5.1.1 and failed miserably. Now every time i try to boot phone it tells me i should use smart switch emergency recovery, which i have tried doing but didn't really manage it work out. After software update and initalization went through i got a pop up window with instructions to hold volume down + power which i did and thats as far as it went.
Phone is soft bricked in current state and i am unsure what to do first to make it working and how to really downgrade it later
I have tried flasing diferent firmwares too but all of them give me CM.bin fail,
help would be appriciated, thanks in advance
try to flash your 6.0.1 maybe you will boot the phone and than try to flash another 6.0.1 for your A510F e and try to re-flash 5.1.1. but this mean that samsung don't want to allow us to downgrade
zyxw-androidiani said:
try to flash your 6.0.1 maybe you will boot the phone and than try to flash another 6.0.1 for your A510F e and try to re-flash 5.1.1. but this mean that samsung don't want to allow us to downgrade
Click to expand...
Click to collapse
wrong post.i am sorry
Hi everyone,
I am running stock G920FXXU4DPIL (6.0.1) and I want to go back to stock G920FXXU3COI9 (5.1.1).
When I try to flash G920FXXU3COI9 with Odin, it fails at sboot.bin with error "sw rev check fail device 4 binary 3", which is quite normal because Samsung prevents flashing older bootloader over newer bootloader.
So I extracted the content of the stock firmware, removed sboot.bin, cm.bin, modem.bin and repacked a new .tar using android unified toolkit.
Then I flashed the resulting file with Odin.
Flashing worked but now I am stuck at Samsung logo. I cannot enter recovery either.
Only way to soft unbrick the phone is flash stock G920FXXU4DPIL again.
Why ??
I also want to go back to 5.1.1 as I don't like MM and N is also not too stable. so I have struggled alot tried 15 different firmwares from all regions but no luck all of them fails at sboot.bin device 5 binary 4 at last I flashed lollipop based zips and they also stuck at bootlogo. There is a combination firmware 5.1.1 with engineered bootloader which allow you to downgrade but fingerprint sensor don't work .
qasim799 said:
I also want to go back to 5.1.1 as I don't like MM and N is also not too stable. so I have struggled alot tried 15 different firmwares from all regions but no luck all of them fails at sboot.bin device 5 binary 4 at last I flashed lollipop based zips and they also stuck at bootlogo. There is a combination firmware 5.1.1 with engineered bootloader which allow you to downgrade but fingerprint sensor don't work .
Click to expand...
Click to collapse
So do you know where I can find SM-G920F engineering bootloader?
I have searched hundreds of pages and it's nowhere to be found :'(
Thanks!
qasim799 said:
I also want to go back to 5.1.1 as I don't like MM and N is also not too stable. so I have struggled alot tried 15 different firmwares from all regions but no luck all of them fails at sboot.bin device 5 binary 4 at last I flashed lollipop based zips and they also stuck at bootlogo. There is a combination firmware 5.1.1 with engineered bootloader which allow you to downgrade but fingerprint sensor don't work .
Click to expand...
Click to collapse
How do you mean not too stable? It works perfectly! I installed CYV version, not a single glitch since install. Everything works like a charm and battery is muvh better than on MM. Plus it has some pretty awesome options.
OK i managed to find a combination firmware:
COMBINATION_OXA_FA50_G920FXXU4APF1_OXA4APF1_CL6658768_QB10183466_REV02
However there is a pit file inside. Does this mean I have to repartition the device?
Seems tricky since I want to be able to flash a stock firmware afterwards.
Can I extract and flash only sboot.bin from combination firmware?
From my understanding, once I have the engineering bootloader, it will let me flash an older one...
couitchy said:
OK i managed to find a combination firmware:
COMBINATION_OXA_FA50_G920FXXU4APF1_OXA4APF1_CL6658768_QB10183466_REV02
However there is a pit file inside. Does this mean I have to repartition the device?
Seems tricky since I want to be able to flash a stock firmware afterwards.
Can I extract and flash only sboot.bin from combination firmware?
From my understanding, once I have the engineering bootloader, it will let me flash an older one...
Click to expand...
Click to collapse
there is no problem with it. You can go back to any MM or N firmware.
---------- Post added at 01:06 PM ---------- Previous post was at 01:04 PM ----------
ilDuceo said:
How do you mean not too stable? It works perfectly! I installed CYV version, not a single glitch since install. Everything works like a charm and battery is muvh better than on MM. Plus it has some pretty awesome options.
Click to expand...
Click to collapse
Maybe I"m fed up from N grace ux as before N was released i was using note 7 grace ux port. Lollipop is so responsive if you used it then you can feel that is pretty obvious.
It worked!
I flashed COMBINATION_OXA_FA50_G920FXXU4APF1_OXA4APF1_CL6658 768_QB10183466_REV02 to get the engineering bootloader rev4.
Then I tried to flash G920FXXU3COI9_G920FOXA3COJ1_G920FXXU3COI9_HOME but it failed at sboot.bin device 4 binary 3 which prooves that even engineering bootloader prevents downgrade.
Then I tried to flash G920FXXU3COI9_G920FOXA3COJ1_G920FXXU3COI9_HOME without sboot.bin, cm.bin and modem.bin => it worked (not stuck at Samsung logo anymore).
My fingerprint scanner is not working but baseband is here (IMEI ok).
So I have kind of a "hybrid Lollipop" G920FXXU3COI9_G920FXXU4BPF1 but that's ok for what I wanted to do
EDIT: CF-Auto-Root-zeroflte-zerofltexx-smg920f doesn't seem to work when using engineering bootloader => I guess I'll have to find a new way to root the phone :-S
so any good way to do it ? because nougat is bad
Finally I got it rooted using TWRP and flashing SuperSU
So, to sum up, here is what I did to downgrade from stock G920FXXU4DPIL (6.0.1) to stock G920FXXU3COI9 (5.1.1):
(my guess is it will also work with Nougat)
1. Find combination firmware with engineering bootloader matching your current bootloader revision (mine was 4) - unfortunately this step may not be free
2. Find stock firmware you want to downgrade to (even if it is packed with an older sboot.bin bootloader)
3. Extract stock firmware, remove sboot.bin, cm.bin and modem.bin
4. Repack stock firmware to tar (with android unified toolkit for example) without the 3 .bin files
5. Flash combination firmware with Odin
6. Let it boot once and then go back to Odin
7. Flash repacked stock firmware with Odin
Additional steps to get root:
8. Download SuperSU (flashable zip)
9. Download TWRP
10. Flash TWRP with Odin
11. Enter recovery (TWRP) and flash SuperSU
Voilà !
Does it work with G925F (edge) too? Because I really want to downgrade to 5.1.1 as well because it was the best version for the Galaxy S6 and S6 edge in my opinion.. Battery life was VERY good, design was pretty amazing... and Samsung is blocking the downgrade (which is very STUPID!)
Okay I downgraded my S6 edge sucessfully to 5.1.1!
I missed that old UI soo mucchh thanks for your guidance
halloo7 said:
Does it work with G925F (edge) too? Because I really want to downgrade to 5.1.1 as well because it was the best version for the Galaxy S6 and S6 edge in my opinion.. Battery life was VERY good, design was pretty amazing... and Samsung is blocking the downgrade (which is very STUPID!)
Click to expand...
Click to collapse
Actually there is a reason Samsung doesn't want you to downgrade bootloader: I noticed that every bootloader update usually comes with modem/baseband update, which implies some modifications in the /efs partition as well. An older bootloader would then be unable to read new /efs partition, resulting in a null IMEI. That is why the correct way to downgrade is to flash the old system files but keeping current modem/baseband.
The real stupid thing here is that the stock MM bootloader prevents stock LP image to boot. Fortunately the engineering bootloader can bypass this
halloo7 said:
Okay I downgraded my S6 edge sucessfully to 5.1.1!
I missed that old UI soo mucchh thanks for your guidance
Click to expand...
Click to collapse
Cool !
:good:
Sometimes I get a Kernel Problem. The phone crashes randomly after the downgrade. How to fix this?
the only thing i want now is a way to make fingerprint sensor work. If anybody know something about it please reply.
qasim799 said:
the only thing i want now is a way to make fingerprint sensor work. If anybody know something about it please reply.
Click to expand...
Click to collapse
I think fingerprint sensor is somehow related to something inside cm.bin (cryptography management). As long as we don't get cm.bin matching both bootloader version and system image version at the same time, I don't see a way to make it work :crying:
couitchy said:
I think fingerprint sensor is somehow related to something inside cm.bin (cryptography management). As long as we don't get cm.bin matching both bootloader version and system image version at the same time, I don't see a way to make it work :crying:
Click to expand...
Click to collapse
i flashed latest cm.bin from nougat it boots up but fingerprint sensor is still not working and with engineering bootloader, the rom crashes at certain apps and get really snapier when unlocking phone with pin or pattern. So i am back to nougat i gave up downgrading almost downloaded whole sammobile 5.1.1 firmwares non of them is having a B:5 K:2 S:2 bootloader I was expecting such rom because on Verizon S6 , there is a 5.1.1 firmware that successfully allows to get down with same latest sboot.bin and i still believe there is a firmware like that for our model too but it is really hard to find it.
couitchy said:
Finally I got it rooted using TWRP and flashing SuperSU
So, to sum up, here is what I did to downgrade from stock G920FXXU4DPIL (6.0.1) to stock G920FXXU3COI9 (5.1.1):
(my guess is it will also work with Nougat)
1. Find combination firmware with engineering bootloader matching your current bootloader revision (mine was 4) - unfortunately this step may not be free
2. Find stock firmware you want to downgrade to (even if it is packed with an older sboot.bin bootloader)
3. Extract stock firmware, remove sboot.bin, cm.bin and modem.bin
4. Repack stock firmware to tar (with android unified toolkit for example) without the 3 .bin files
5. Flash combination firmware with Odin
6. Let it boot once and then go back to Odin
7. Flash repacked stock firmware with Odin
Additional steps to get root:
8. Download SuperSU (flashable zip)
9. Download TWRP
10. Flash TWRP with Odin
11. Enter recovery (TWRP) and flash SuperSU
Voilà !
Click to expand...
Click to collapse
I've tried flashing the firmware without the binfiles but It just gets stuck on file analysis.
Hi,
I want to downgrade my SM-A310F to earlier Android versions, but Odin blocks this with the Error: "SW REV. CHECK FAIL. DEVICE: 3. BINARY: 2."
So apparently I can only install firmware files which come with the same Bootloader I'm currently on (so 3) and not earlier versions. For me it's Android 7 and the latest update of 6.0.1 which where made for this bootloader. But I want to downgrade to earlier versions of Android (please don't ask why, I know that these don't have the latest security patches etc. pp.).
So my first idea was I should downgrade the bootloader first so it matches the firmware I want to install. I extracted the recovery.img out of the firmware file, packed it in a .tar file and flashed it successfully through Odin. But unfortunately I get the same error in Odin like above when trying to flash the firmware again, so the bootloader maybe didn't downgrade?!
What can I do to downgrade my bootloader?
I want to install a stock Android ROM, so Custom ROMs are not an option. I heard I can install a Custom Bootloader, like TWRP, which allows installing every firmware?!
But does that trip my KNOX counter? My KNOX is still 0, so if there's an option to downgrade to earlier ROMs without tripping KNOX I'd be glad to hear it.
So I found the answer myself.
Apparently it is not possible to simply downgrade the Bootloader. I didn't fully dig into this, but to simply flash some image with Odin won't do the trick at least.
What works however is to downgrade to an older firmware with an older bootloader even if one keeps the newer bootloader on his device.
So what's the trick? One downloads the firmware file (.tar) which one wants to downgrade to and opens it with an archiver application (7zip). One extracts all the files to a folder and repacks them again in a .tar file but leaving every file out which ends on .bin (e.g. sboot.bin etc.). This .tar file can be flashed like any other firmware file via Odin and it should run through it without any problems.
I can not confirm that the downgrade works for every firmware version, but at least I could downgrade from Android 7 Nougat to 6.0.1 Marshmellow while the first one comes with the SW Rev 3 bootloader and the latter with SW Rev 2 bootloader. Again, I don't know how far into the past this works, e.g. if you can downgrade from 7 to 5.1.1 with this method.
Another option is always a Custom ROM (like this one for 5.1.1 for example) which doesn't check the Bootloader version.
I don't know if this method trips KNOX since I had tripped it already before figuring this out (very well could be, since you're not flashing a signed firmware file anymore...).
mcpossity said:
So I found the answer myself.
Apparently it is not possible to simply downgrade the Bootloader. I didn't fully dig into this, but to simply flash some image with Odin won't do the trick at least.
What works however is to downgrade to an older firmware with an older bootloader even if one keeps the newer bootloader on his device.
So what's the trick? One downloads the firmware file (.tar) which one wants to downgrade to and opens it with an archiver application (7zip). One extracts all the files to a folder and repacks them again in a .tar file but leaving every file out which ends on .bin (e.g. sboot.bin etc.). This .tar file can be flashed like any other firmware file via Odin and it should run through it without any problems.
I can not confirm that the downgrade works for every firmware version, but at least I could downgrade from Android 7 Nougat to 6.0.1 Marshmellow while the first one comes with the SW Rev 3 bootloader and the latter with SW Rev 2 bootloader. Again, I don't know how far into the past this works, e.g. if you can downgrade from 7 to 5.1.1 with this method.
Another option is always a Custom ROM (like this one for 5.1.1 for example) which doesn't check the Bootloader version.
I don't know if this method trips KNOX since I had tripped it already before figuring this out (very well could be, since you're not flashing a signed firmware file anymore...).
Click to expand...
Click to collapse
https://forum.xda-developers.com/samsung-a-series/general/rom-t3614602
So I found the answer myself.
Apparently it is not possible to simply downgrade the Bootloader. I didn't fully dig into this, but to simply flash some image with Odin won't do the trick at least.
What works however is to downgrade to an older firmware with an older bootloader even if one keeps the newer bootloader on his device.
So what's the trick?
mcpossity said:
One downloads the firmware file (.tar) which one wants to downgrade to and opens it with an archiver application (7zip). One extracts all the files to a folder and repacks them again in a .tar file but leaving every file out which ends on .bin (e.g. sboot.bin etc.). This .tar file can be flashed like any other firmware file via Odin and it should run through it without any problems.
Click to expand...
Click to collapse
Hi there mcpossity.
Can you please be more specific on this trick part? Please share the steps you followed.
Regards
With a S7 Edge
Hello,
My phone has updated on the last version of Android 8.0.0 Oreo (01.12.2020), with the last version of Bootloader (7th). I want to downgrade my device to Android 6.0.1, but all version for this OS have BLv1, so I am in the same situation than you (but one gen. later). Can I downgrade my phone, with the same methode ? If so, can you explain this in detail or give me a custom OS ? Thanks in advance.
I tried with this methode and this doesn't work : Odin has shut down when I have started the process. What was wrong ?
Downgrade using old versions of LineageOS?
Hi, I've got the same problem: I installed LineageOS 17.1 (Andoroid 10) which upgraded my Bootloader to 5. Now I need to go back to stock ROM but cannot do so because the error says: "SW REV. CHECK FAIL (BOOTLOADER) DEVICE: 5, BINARY 1.
Is it possible to install an early Lineage OS that downgrades the Bootloader and then install stock ROM? Where would I find the BL version of LineageOS?
Thanks
PS: In my case Galaxy S8
galaxynoobie said:
Hi, I've got the same problem: I installed LineageOS 17.1 (Andoroid 10) which upgraded my Bootloader to 5. Now I need to go back to stock ROM but cannot do so because the error says: "SW REV. CHECK FAIL (BOOTLOADER) DEVICE: 5, BINARY 1.
Is it possible to install an early Lineage OS that downgrades the Bootloader and then install stock ROM? Where would I find the BL version of LineageOS?
Thanks
PS: In my case Galaxy S8
Click to expand...
Click to collapse
story is not completely same but my device is note 9 exynos and i did march patch BL is 5 and android 10 & 9 is sucks so need 8.1 but can't go back need serious help
Hey I'm Sam said:
story is not completely same but my device is note 9 exynos and i did march patch BL is 5 and android 10 & 9 is sucks so need 8.1 but can't go back need serious help
Click to expand...
Click to collapse
have you ever rosolved this ?
i have s9 note, want disperatly to downgrade to oreo for call recording. I feel cheated from samsung, what a waste of money....
Nemonavicusrino said:
have you ever rosolved this ?
i have s9 note, want disperatly to downgrade to oreo for call recording. I feel cheated from samsung, what a waste of money....
Click to expand...
Click to collapse
in the same boat as you, cube acr does record but the recording quality is very poor and the recording does not work when you are using Bluetooth headphones
Need help with recording
bilaliz said:
in the same boat as you, cube acr does record but the recording quality is very poor and the recording does not work when you are using Bluetooth headphones
Click to expand...
Click to collapse
Find something here, but i am not sure what i need, seem promising. I feel so cheated by this companies that put this restrictions on OUR HARDWARE. I do not understand, why something i pay today, dont work as espected tomorow, for SECURITY REASON. I want to asume risk and i do not know who is the owner. Me or samsung or google ?
https://forum.xda-developers.com/galaxy-note-9/help/enabling-native-call-recorder-csc-t3962224/page2
Espect day when phones is replaced by personal computer model. I want this OS on this hardware, with this app for calling and ...voila. I am at rage now : a 1000+ euro hardware canot record WHAT I SPEAK AND WHAT IS SPEAKED TO ME? if i put call on speaker and 10 person hear what is the diference...
Please help !
GuestD1009 said:
So I found the answer myself.
Apparently it is not possible to simply downgrade the Bootloader. I didn't fully dig into this, but to simply flash some image with Odin won't do the trick at least.
What works however is to downgrade to an older firmware with an older bootloader even if one keeps the newer bootloader on his device.
So what's the trick? One downloads the firmware file (.tar) which one wants to downgrade to and opens it with an archiver application (7zip). One extracts all the files to a folder and repacks them again in a .tar file but leaving every file out which ends on .bin (e.g. sboot.bin etc.). This .tar file can be flashed like any other firmware file via Odin and it should run through it without any problems.
I can not confirm that the downgrade works for every firmware version, but at least I could downgrade from Android 7 Nougat to 6.0.1 Marshmellow while the first one comes with the SW Rev 3 bootloader and the latter with SW Rev 2 bootloader. Again, I don't know how far into the past this works, e.g. if you can downgrade from 7 to 5.1.1 with this method.
Another option is always a Custom ROM (like this one for 5.1.1 for example) which doesn't check the Bootloader version.
I don't know if this method trips KNOX since I had tripped it already before figuring this out (very well could be, since you're not flashing a signed firmware file anymore...).
Click to expand...
Click to collapse
you sure this method works? i want to downgrade from 9 to 8. I am desperate now. But i don't know if it'll work. I've read thousands of words and all say it won't work.
S10 downgrade bootloader
I'm also in the same boat, Galaxy S10 (Exynos). Android 10 doesn't support PPTP VPN hotspot, and now my bootloader has been upgraded to U4. So yeah..
this seems helpful. are there anyone tried this on a s10 exynos?
ya not alone with an Samsung.....i'm on Sony Xperia 1 and after the update to Android 10 i have couple issuse with Soft restart out of nowhere everyday ones or more
dowangrade to Pie wasn't the problem but with Pie i went into an Gyroscope error....display isn't turning anymore i tried everything to get the sensor working but nothing helped
after updating to Android 10 Sensor running well
PlayJ004 said:
With a S7 Edge
Hello,
My phone has updated on the last version of Android 8.0.0 Oreo (01.12.2020), with the last version of Bootloader (7th). I want to downgrade my device to Android 6.0.1, but all version for this OS have BLv1, so I am in the same situation than you (but one gen. later). Can I downgrade my phone, with the same methode ? If so, can you explain this in detail or give me a custom OS ? Thanks in advance.
I tried with this methode and this doesn't work : Odin has shut down when I have started the process. What was wrong ?
Click to expand...
Click to collapse
same here
Me now with sm-p615 (tablet)
GuestD1009 said:
So I found the answer myself.
Apparently it is not possible to simply downgrade the Bootloader. I didn't fully dig into this, but to simply flash some image with Odin won't do the trick at least.
What works however is to downgrade to an older firmware with an older bootloader even if one keeps the newer bootloader on his device.
So what's the trick? One downloads the firmware file (.tar) which one wants to downgrade to and opens it with an archiver application (7zip). One extracts all the files to a folder and repacks them again in a .tar file but leaving every file out which ends on .bin (e.g. sboot.bin etc.). This .tar file can be flashed like any other firmware file via Odin and it should run through it without any problems.
I can not confirm that the downgrade works for every firmware version, but at least I could downgrade from Android 7 Nougat to 6.0.1 Marshmellow while the first one comes with the SW Rev 3 bootloader and the latter with SW Rev 2 bootloader. Again, I don't know how far into the past this works, e.g. if you can downgrade from 7 to 5.1.1 with this method.
Another option is always a Custom ROM (like this one for 5.1.1 for example) which doesn't check the Bootloader version.
I don't know if this method trips KNOX since I had tripped it already before figuring this out (very well could be, since you're not flashing a signed firmware file anymore...).
Click to expand...
Click to collapse
How on earth did you do that??
Which archive are you talking about when you say you unpack all the files and repack them without every .bin file?
I'm guessing the BL archive because that's the only one with a lot .bin files in it.
So I tried the BL_xxxx.tar.md archive and repacked it. But Odin would always get stuck at "file analysis..."
Also did you flash the modified BL first and then the AP, CP and CSC or did you flash it all at once?
I've got the same problem here. I want to downgrade my Galaxy S7 from Android 8.0 to Androud 7.0 but am unable to do so, to the point where I'm considering buying a completely new device just to have Android 7.0 again.
There is a way but...only Samsung's engineer are able to hack / trick this.
It is require special file to flashing in device then Sofware protection will be removed
Ask an Samsung Mobile Engineer if you have relatives.
Hello, I have recently installed Android 8.0 (Unofficial) on my S7 edge as mentioned in this thread by ProtoDeVNan0. And also installed TWRP recovery as explained here to upgrade it. After installation figured that it has some issues with some features.
So now I am trying to downgrade to the latest official firmware.
But every time I download and install the official firmware zip file using TWRP, it says the zip file is corrupt. So I tried downloading from different sources and still it says it is corrupt in TWRP.
And then I tried using Odin after extracting the Zip file. Using the tar.md5 files inside it. It fails as well.
And also found no way to install the official recovery.
Is there any way I can downgrade from 8.0 to official 7.0? And also I would like to remove TWRP and install official recovery. Basically returning it to its original state.
Searched a lot and found no possible ways to do so.
Please help. Thank you
SOLUTION:
I have found the solution to the issue.
I previously tried using odin to load all the packages in the zip file all together which was the reason i was getting the error.
The solution is to tick and select AP file only in odin and start.
(in case stuck at meta-data unplug)
Then reset odin and re-start the phone into download mode again.
Now tick and select the CSC file (not HOME_CSC), and then start.
After the phone reboots, a factory data reset will occur and phone boots up.
Why are you using TWRP to attempt to install Official samsung firmware?
You do it all through ODIN, it'll put your device back to basically original setup state with stock firmware. Flash with CSC and not home_CSC, I assume you have no data you will need to backup before hand.
More info here:
http://updato.com/how-to/how-to-install-an-official-samsung-stock-firmware-using-odin
Which Version you use odin? I try your solution but dont work on my g935f?
BL not downgraded!
khan0412 said:
Hello, I have recently installed Android 8.0 (Unofficial) on my S7 edge as mentioned in this thread by ProtoDeVNan0. And also installed TWRP recovery as explained here to upgrade it. After installation figured that it has some issues with some features.
So now I am trying to downgrade to the latest official firmware.
But every time I download and install the official firmware zip file using TWRP, it says the zip file is corrupt. So I tried downloading from different sources and still it says it is corrupt in TWRP.
And then I tried using Odin after extracting the Zip file. Using the tar.md5 files inside it. It fails as well.
And also found no way to install the official recovery.
Is there any way I can downgrade from 8.0 to official 7.0? And also I would like to remove TWRP and install official recovery. Basically returning it to its original state.
Searched a lot and found no possible ways to do so.
Please help. Thank you
SOLUTION:
I have found the solution to the issue.
I previously tried using odin to load all the packages in the zip file all together which was the reason i was getting the error.
The solution is to tick and select AP file only in odin and start.
(in case stuck at meta-data unplug)
Then reset odin and re-start the phone into download mode again.
Now tick and select the CSC file (not HOME_CSC), and then start.
After the phone reboots, a factory data reset will occur and phone boots up.
Click to expand...
Click to collapse
STILL NOT DOWNGRADED!!
You can apply the solution described above (using ODIN to flash AP, CP and CSC with a previous version of firmware). However, the Boot-loader will remain under the latest version (since January 2018 update).
The problem is drastically worst for those who used to patch certificates before the January 2018. For those users, I will advise to not install the update from January 2018 because, they will not find any tools currently available to patch certificates and get the phone work a new. They can try but it will not be successful and the phone will keep saying "Emergency call only" or "not registered on network".
Anyone having successful experience to inform others please!
Thank you.
M. T. Coulibaly
Yes it Solved. You Need to have Stock Firmware of March , and extract PIT File, then flash Firmware with PIT File.
In Options tab check "F. Reset Time", "Auto Reboot", "Nand Erase", "Re-Partition" and "Phone Bootloader Update". Rest options must be UNCHECKED!!!
If anyone need Firmware of March for G935F and the PIT , then let me know.
HELP Corrupt Zip Stock ROM TWRP
..
therealchris said:
..
Click to expand...
Click to collapse
You must Flash it with Odin, with PIT , you must do it how i sad it in my last Post. I Upload Firmware and PIT now to Mega.
Please, someone help me
Sorry if my english is not good, i'm confused where to go for help.
I also experienced the same problem. I just tried installing android 8.0 (from the same link and way as you explained) and it works. but after I tried several times, a lot of bug that makes me uncomfortable.
So I plan to restore it to the official/original firmware version as before. I've tried using odin and also the same as you experienced, always fail when installing BL. And AP, CP, CSC works well.
Then, what should i do?
Can someone please help explain to me more clearly? with more easily understood words. My English is not very good, I still have to use translator for sentences that I do not understand. I would appreciate your help.
Thank you
Help me
Serbian_Andro said:
Yes it Solved. You Need to have Stock Firmware of March , and extract PIT File, then flash Firmware with PIT File.
In Options tab check "F. Reset Time", "Auto Reboot", "Nand Erase", "Re-Partition" and "Phone Bootloader Update". Rest options must be UNCHECKED!!!
If anyone need Firmware of March for G935F and the PIT , then let me know.
Click to expand...
Click to collapse
Please, someone help me
Sorry if my english is not good, i'm confused where to go for help.
I also experienced the same problem. I just tried installing android 8.0 (from the same link and way as you explained) and it works. but after I tried several times, a lot of bug that makes me uncomfortable.
So I plan to restore it to the official/original firmware version as before. I've tried using odin and also the same as you experienced, always fail when installing BL. And AP, CP, CSC works well.
Then, what should i do?
Can someone please help explain to me more clearly? with more easily understood words. My English is not very good, I still have to use translator for sentences that I do not understand. I would appreciate your help.
Thank you
How to downgrade from Official Oreo to Nougat
khan0412 said:
Hello, I have recently installed Android 8.0 (Unofficial) on my S7 edge as mentioned in this thread by ProtoDeVNan0. And also installed TWRP recovery as explained here to upgrade it. After installation figured that it has some issues with some features.
So now I am trying to downgrade to the latest official firmware.
But every time I download and install the official firmware zip file using TWRP, it says the zip file is corrupt. So I tried downloading from different sources and still it says it is corrupt in TWRP.
And then I tried using Odin after extracting the Zip file. Using the tar.md5 files inside it. It fails as well.
And also found no way to install the official recovery.
Is there any way I can downgrade from 8.0 to official 7.0? And also I would like to remove TWRP and install official recovery. Basically returning it to its original state.
Searched a lot and found no possible ways to do so.
Please help. Thank you
SOLUTION:
I have found the solution to the issue.
I previously tried using odin to load all the packages in the zip file all together which was the reason i was getting the error.
The solution is to tick and select AP file only in odin and start.
(in case stuck at meta-data unplug)
Then reset odin and re-start the phone into download mode again.
Now tick and select the CSC file (not HOME_CSC), and then start.
After the phone reboots, a factory data reset will occur and phone boots up.
Click to expand...
Click to collapse
after trying for many days got this Solution.
The baseband should be same or higher of the firmware to downgrade.
Example: G935FXXU2DRAG Oreo
G935FXXU1DRAG Nougat ( will not happen.)
Both should be same I mean the U2 in the middle.
Or u can downgrade upgrade from U1 oero to U2 Naugat. But not from U2 to U1 Baseband.
Hope it helps.
Just download last nougat release and flash it using latest odin simply guys,
I have tested, no one needs to use pit file or nand erase etc. Use samfirm to download latest firmware for your model. Then use latest odin to flash. Be sure to use normal csc file, NOT the home csc. You don't need pit file when using normal csc, its included with it.
If you used twrp recovery etc to flash unofficial oreo releases, you need to first confirm if oem unlock is enabled, don't tick on auto reboot option, just tick F.reset from odin options, then first flash latest nougat for your region through odin, then flash twrp through odin. Then when odin says pass, force reboot into twrp recovery from download mode, then format data in twrp and flash super SU/magisk and no verity opt encrypt. Then reboot and you will be good.
Sent from my S7 Edge using XDA Labs
Serbian_Andro said:
Yes it Solved. You Need to have Stock Firmware of March , and extract PIT File, then flash Firmware with PIT File.
In Options tab check "F. Reset Time", "Auto Reboot", "Nand Erase", "Re-Partition" and "Phone Bootloader Update". Rest options must be UNCHECKED!!!
If anyone need Firmware of March for G935F and the PIT , then let me know.
Click to expand...
Click to collapse
I need the link for march firmware please. Thanks a lot
can't downgrade
odin gives "FAIL" when starting the procedure.
i have the U1 nougat version and the U2 oreo version.
can't seem to find U2 nougat ( if any) and I guess upon upgrading to OREO sonething had changed and can't downgrade anymore.
I managed to get into android recovery and did a factory reset and total wipe but nothing, through ODIN flashing doesn't work.
Any ideas anybody ? I really want to downgrade so I will be able to install stock nougat, and flash an oreo custom ROM with magisk in order to get around the KNOX triger thing.
tks
doron
doronwin said:
odin gives "FAIL" when starting the procedure.
i have the U1 nougat version and the U2 oreo version.
can't seem to find U2 nougat ( if any) and I guess upon upgrading to OREO sonething had changed and can't downgrade anymore.
I managed to get into android recovery and did a factory reset and total wipe but nothing, through ODIN flashing doesn't work.
Any ideas anybody ? I really want to downgrade so I will be able to install stock nougat, and flash an oreo custom ROM with magisk in order to get around the KNOX triger thing.
tks
doron
Click to expand...
Click to collapse
You can't flash U1 nougat on U2 oreo firmware. It has been all over xda that U2 firmwares has Version 2 bootloader which can't be downgraded to Version 1 bootloader of U1 firmwares. Nougat has many U2 firmwares, you simply need to search..
Sent from my S7 Edge using XDA Labs
bluetooth start works but need switch off battery optimization
Hello everyone
I found it!!!
Problem with your bluetooh connection after upgrade can be solved in one of the way follow previous post or "disable battery optimization.
I try before swichng off and on all networks, emergency mode etc. and nothing happen.
Disable battery optimization
Sometimes battery optimization also messes up with Bluetooth connections. I suggest you check battery optimization settings and remove Bluetooth from it. To do so, follow the steps:
Open device Settings and go to Battery. There is few ways to go there:
first can be: open settings go to "device maintenance">>>clik on "battery">>>clik on "batterry usage">>>clik on 3 dots right top corner>>>then clik "optimise battery usage">>> and u are there - swich off “Bluetooth MIDI service” and apps that you use with Bluetooth such as Play Music, Phone, youtube, maps etc.
2nd
open settings Tap the 3-dot menu present at the top right corner and select “Battery Optimization”.
Turn off Battery Optimization for “Bluetooth MIDI service” and the apps that you use with Bluetooth such as Play Music, Phone, youtube, maps etc.
therealchris said:
..
Click to expand...
Click to collapse
Serbian_Andro said:
Yes it Solved. You Need to have Stock Firmware of March , and extract PIT File, then flash Firmware with PIT File.
In Options tab check "F. Reset Time", "Auto Reboot", "Nand Erase", "Re-Partition" and "Phone Bootloader Update". Rest options must be UNCHECKED!!!
If anyone need Firmware of March for G935F and the PIT , then let me know.
Click to expand...
Click to collapse
hello...have problem to downgrade from u3 to u2 ...can you help me please ??
Downgrading from U3 Oreo to Naugat
justmemike said:
hello...have problem to downgrade from u3 to u2 ...can you help me please ??
Click to expand...
Click to collapse
Hello. I 've read all the topics and youtube comments about downgrading from oreo.
My oreo is U3,and everyone know that nougat is U2.
So that means we can't downgrade from u3 oreo to nougat u2.
Anyone if knows something,please,pleeeease tell me.
I really need nougat...
nar3k said:
Hello. I 've read all the topics and youtube comments about downgrading from oreo.
My oreo is U3,and everyone know that nougat is U2.
So that means we can't downgrade from u3 oreo to nougat u2.
Anyone if knows something,please,pleeeease tell me.
I really need nougat...
Click to expand...
Click to collapse
I think i've already tried anything to make downgrading possible but no luck,
Serbian_Andro said:
Yes it Solved. You Need to have Stock Firmware of March , and extract PIT File, then flash Firmware with PIT File.
In Options tab check "F. Reset Time", "Auto Reboot", "Nand Erase", "Re-Partition" and "Phone Bootloader Update". Rest options must be UNCHECKED!!!
If anyone need Firmware of March for G935F and the PIT , then let me know.
Click to expand...
Click to collapse
--------------------
My Samsung S7 edge upgraded to Oreo with Binary U3. I would like to downgrade to Nougat. If your PIT file can help me with this then please share with me.
awaism81 said:
--------------------
My Samsung S7 edge upgraded to Oreo with Binary U3. I would like to downgrade to Nougat. If your PIT file can help me with this then please share with me.
Click to expand...
Click to collapse
it ain't possible man, I've already tried that