Database Develop

[Q] AT&T (i537) active problem with unbricking help please!

Hey guys so recently I had rooted my i537 S4 active and have been researching and modifying here and there until i decided to get a custom ROM. I found WickedROM via this post http://forum.xda-developers.com/show....php?t=2491762 and considering it had worked on this person's i537 I decided to flash the ROM. After flashing I had become stuck in a bootloop and I can't get to anything besides DOWNLOAD MODE. Due to this problem I decided to run a stock firmware via Odin with this one_click http://rootzwiki.com/topic/44121-sgh...axy-s4-active/ ... this filled up until the bar was about 90% and then all of a sudden fails at <ID:0/003> system.img.ext4. I've tried other firmwares with no luck and have resorted to posting about this problem. please help and guide me in the right direction, my phone's been bricked for 3 days now. Trying to boot into recovery gives me the "there's been a problem with your firmware update, please run in Kies recovery" and Kies doesn't recognize my phone.

nickeon1 said:
After flashing I had become stuck in a bootloop and I can't get to anything besides DOWNLOAD MODE.
Click to expand...
Click to collapse
You forgot to flash the masterpatch which makes roms designed for the AT&T S4 (not active) work for our phone. If I understand correctly it needs to be flashed immediately after the rom is installed (i.e. still in SafeStrap, before you attempt to boot up).
nickeon1 said:
Due to this problem I decided to run a stock firmware via Odin with this one_click http://rootzwiki.com/topic/44121-sgh...axy-s4-active/ ... this filled up until the bar was about 90% and then all of a sudden fails at <ID:0/003> system.img.ext4 and Kies doesn't recognize my phone.
Click to expand...
Click to collapse
That link is for MF1, an outdated firmware. Here is a collection of stock i537 firmwares. I can personally confirm the NH3 file is usable since I used it to upgrade to the most recent firmware without losing root.
This thread will provide you instructions on how to use Odin to flash any stock firmware. I can only add I recommend using Odin v3.07, as I've used it with the most success and fewest issues. Also use NH3 firmware or at the very least NE3, because anything else is outdated, assuming you were on stock KitKat originally, and you will encounter similar issues if trying to downgrade to jellybean.
Also flashing with Odin deletes all your saved files/user info etc. on your phone. From the sound of it, fixing your phone is going to involve inevitably wiping it one way or the other, so I hope you have a backup saved somewhere other than your phone's internal memory.

nickeon1 said:
Hey guys so recently I had rooted my i537 S4 active and have been researching and modifying here and there until i decided to get a custom ROM. I found WickedROM via this post http://forum.xda-developers.com/show....php?t=2491762 and considering it had worked on this person's i537 I decided to flash the ROM. After flashing I had become stuck in a bootloop and I can't get to anything besides DOWNLOAD MODE. Due to this problem I decided to run a stock firmware via Odin with this one_click http://rootzwiki.com/topic/44121-sgh...axy-s4-active/ ... this filled up until the bar was about 90% and then all of a sudden fails at <ID:0/003> system.img.ext4. I've tried other firmwares with no luck and have resorted to posting about this problem. please help and guide me in the right direction, my phone's been bricked for 3 days now. Trying to boot into recovery gives me the "there's been a problem with your firmware update, please run in Kies recovery" and Kies doesn't recognize my phone.
Click to expand...
Click to collapse
When you flash back to stock, you can only flash a version that is equal to or greater than the version you were already on. So if you were originally on 4.4.2 you can only flash a 4.4.2 stock ROM, any other ROM will fail to flash.

thisisapoorusernamechoice said:
You forgot to flash the masterpatch which makes roms designed for the AT&T S4 (not active) work for our phone. If I understand correctly it needs to be flashed immediately after the rom is installed (i.e. still in SafeStrap, before you attempt to boot up).
That link is for MF1, an outdated firmware. Here is a collection of stock i537 firmwares. I can personally confirm the NH3 file is usable since I used it to upgrade to the most recent firmware without losing root.
This thread will provide you instructions on how to use Odin to flash any stock firmware. I can only add I recommend using Odin v3.07, as I've used it with the most success and fewest issues. Also use NH3 firmware or at the very least NE3, because anything else is outdated, assuming you were on stock KitKat originally, and you will encounter similar issues if trying to downgrade to jellybean.
Also flashing with Odin deletes all your saved files/user info etc. on your phone. From the sound of it, fixing your phone is going to involve inevitably wiping it one way or the other, so I hope you have a backup saved somewhere other than your phone's internal memory.
Click to expand...
Click to collapse
Thanks very much for this! I flashed an NE3 firmware and was able to get my phone in working condition. So if I wanted to flash a rom on my phone I would have to masterpatch AFTER the rom flash via Safestrap?

nickeon1 said:
Thanks very much for this! I flashed an NE3 firmware and was able to get my phone in working condition. So if I wanted to flash a rom on my phone I would have to masterpatch AFTER the rom flash via Safestrap?
Click to expand...
Click to collapse
Yes, but make sure the phone doesn't reboot in between flashing the ROM and flashing the Masterpatch.

Odin flash auto-reverts after rebooting

Hi guys, i have an s4 active i9295 with a bootloop, so i decided to flash stock rom via odin as i always did with samsung phones with this problem but every time i flash a rom (i tried different ones) the phone restarts as normal but when the samsung logo appears then it says on the top left with blue letters revocery booting, then it does something with a progress bar and an android logo above and restarts. When it boots again its back at the bootloop, im an absolute noob in this but what i understand is happening is that the phone is reverting the flash i did with odin and i want to know what am i doing wrong, is this supposed to happen? Any help will be much appreciated

Hello,
Welcome to XDA.
To better assist you, your thread will be moved to your device Q&A forum linked below.
http://forum.xda-developers.com/galaxy-s4-active/help
The experts there may be able to help. Good luck.

I need help, its quite an expensive phone to just give up and throw it away
nexware said:
Hi guys, i have an s4 active i9295 with a bootloop, so i decided to flash stock rom via odin as i always did with samsung phones with this problem but every time i flash a rom (i tried different ones) the phone restarts as normal but when the samsung logo appears then it says on the top left with blue letters revocery booting, then it does something with a progress bar and an android logo above and restarts. When it boots again its back at the bootloop, im an absolute noob in this but what i understand is happening is that the phone is reverting the flash i did with odin and i want to know what am i doing wrong, is this supposed to happen? Any help will be much appreciated
Click to expand...
Click to collapse
C'mon guys you may know what is going on with my s4, no matter what i do it bootloops, tried everithing
pit + firmware on odin, still bootloops, wipe data/cache after and before flashing, still bootloops, i researched a lot and tried almost everithing with the same result, please help me, i'll personally bake a cake to the first nice guy to help me get out of the bootloop

nexware said:
C'mon guys you may know what is going on with my s4, no matter what i do it bootloops, tried everithing
pit + firmware on odin, still bootloops, wipe data/cache after and before flashing, still bootloops, i researched a lot and tried almost everithing with the same result, please help me, i'll personally bake a cake to the first nice guy to help me get out of the bootloop
Click to expand...
Click to collapse
I'll try to help you, what did you install or modify that caused the bootloop in the first place? Was your device rooted? Did you have custom recovery? What recovery? Did you have a custom ROM? What ROM?

Droidriven said:
I'll try to help you, what did you install or modify that caused the bootloop in the first place? Was your device rooted? Did you have custom recovery? What recovery? Did you have a custom ROM? What ROM?
Click to expand...
Click to collapse
I received the phone as it is with the bootloop, don't know much of its state before but i was told that it was a bad flashing procedure the cause of the problem. It had stock recoverys from the different roms i flashed in odin: I9295XXUDOB4
I9295XXUCNE5
I9295VJUDOF1
There was one time i managed to make it boot flashing CWM and installing cyanogenmod 12.1 but on restart it kept bootlooping again and i was unable to get it to boot again even repeating exactly the same steps i did before.
I want to make an absolute clean firmware flash with the original rom that this phone came in my country (VJUBMK4) but from what i understand once im on newer versions (im not sure if 4.3 or 5.0) i cant downgrade.
I really don't know what is it causing the bootloop, how can i get the pone to factory firmware? Am i doing something wrong?

nexware said:
I received the phone as it is with the bootloop, don't know much of its state before but i was told that it was a bad flashing procedure the cause of the problem. It had stock recoverys from the different roms i flashed in odin: I9295XXUDOB4
I9295XXUCNE5
I9295VJUDOF1
There was one time i managed to make it boot flashing CWM and installing cyanogenmod 12.1 but on restart it kept bootlooping again and i was unable to get it to boot again even repeating exactly the same steps i did before.
I want to make an absolute clean firmware flash with the original rom that this phone came in my country (VJUBMK4) but from what i understand once im on newer versions (im not sure if 4.3 or 5.0) i cant downgrade.
I really don't know what is it causing the bootloop, how can i get the pone to factory firmware? Am i doing something wrong?
Click to expand...
Click to collapse
Ah, it sounds like you have one of the devices with locked bootloaders then if you can't downgrade, if that is the case you can't use CWM, TWRP, CM or AOSP custom ROMs, those devices have to use Safestrap and modified Stock ROMs. Or you may can unlock the bootloader. I'm not sure that is your problem but you can check it out.
You can flash the newest stock firmware and just be done with it, you may not be able to root and flash custom but the device will at least work.
Sent from my SCH-I535 using Tapatalk

Droidriven said:
Ah, it sounds like you have one of the devices with locked bootloaders then if you can't downgrade, if that is the case you can't use CWM, TWRP, CM or AOSP custom ROMs, those devices have to use Safestrap and modified Stock ROMs. Or you may can unlock the bootloader. I'm not sure that is your problem but you can check it out.
You can flash the newest stock firmware and just be done with it, you may not be able to root and flash custom but the device will at least work.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
How can i be sure that the device has a locked bootloader? If that's the case, what can i do to make it to just work as stock? I need a special kind of stock firmware?

nexware said:
How can i be sure that the device has a locked bootloader? If that's the case, what can i do to make it to just work as stock? I need a special kind of stock firmware?
Click to expand...
Click to collapse
Boot into download mode by holding the volume down + power button and see what is the device name listed there

nexware said:
How can i be sure that the device has a locked bootloader? If that's the case, what can i do to make it to just work as stock? I need a special kind of stock firmware?
Click to expand...
Click to collapse
Take the cover off and pull the battery, the label under the battery should have the model number for the phone.
If the model is GT-i9295, then you have an unlocked bootloader and should be able to flash any firmware.
If the model is SGH-i537, then you have a locked bootloader and can only flash firmware meant for that phone.
Once we know which phone you have we can help you.

JASONRR said:
Boot into download mode by holding the volume down + power button and see what is the device name listed there
Click to expand...
Click to collapse
It says this:
PRODUCT NAME: GT-I9295
CURRENT BINARY: Custom
SYSTEM STATUS: Official
CSB-CONFIG-LSB: 0x30
SECURE DOWNLOAD : ENABLE
WRITE PROTECTION: ENABLE
eMMC BURST MODE enabled

Devo7v said:
Take the cover off and pull the battery, the label under the battery should have the model number for the phone.
If the model is GT-i9295, then you have an unlocked bootloader and should be able to flash any firmware.
If the model is SGH-i537, then you have a locked bootloader and can only flash firmware meant for that phone.
Once we know which phone you have we can help you.
Click to expand...
Click to collapse
Its GT-i9295

Can you flash VJUCNI1 or VJUDOF1?

Cant Downgrade to 4.1.1 from 4.4.4. on i9305

i9305 Imei shows null/null after flashing I9305XXUFNL1_DBTFNL1 which was a stock rom
Also no signal as you would guess
Now I cant even downgrade to any roms apart from 4.4.4.
Phoen is rooted and tried 4.1.1. I9305XXALI5_I9305EVRALI5_I9305BVALI5 through Odin and Mobile ODIN
On Mobile odin phone looks like its working then stays on the SAMSUNG Logo for ages and nothing, just stays there
I have a Back up of an efs which I done through Rom Manager but not sure if its corrupted or how to restore it
If someone coud give me a walkthrough :highfive:

EwOkie said:
i9305 Imei shows null/null after flashing I9305XXUFNL1_DBTFNL1 which was a stock rom
Also no signal as you would guess
Now I cant even downgrade to any roms apart from 4.4.4.
Phoen is rooted and tried 4.1.1. I9305XXALI5_I9305EVRALI5_I9305BVALI5 through Odin and Mobile ODIN
On Mobile odin phone looks like its working then stays on the SAMSUNG Logo for ages and nothing, just stays there
I have a Back up of an efs which I done through Rom Manager but not sure if its corrupted or how to restore it
If someone coud give me a walkthrough :highfive:
Click to expand...
Click to collapse
Hi,
About IMEI null/null with 4.4.4 firmware, you should search in this Q/A forum, there a lot of threads asking for this issue. Maybe you should get an answer yourself
However, you should try again to do a clean flash of latest official 4.4.4 firmware with ODIN v3.09 by following this GUIDE HERE from @MaHo_66.
AFAIK, it's impossible to downgrade from 4.4.4 because of KNOX bootloader. It has been said many times in this Q/A forum. Maybe it exists somewhere a tricky trick to do it but I'm not aware of this.

FLooDW said:
Hi,
About IMEI null/null with 4.4.4 firmware, you should search in this Q/A forum, there a lot of threads asking for this issue. Maybe you should get an answer yourself
However, you should try again to do a clean flash of latest official 4.4.4 firmware with ODIN v3.09 by following this GUIDE HERE from @MaHo_66.
AFAIK, it's impossible to downgrade from 4.4.4 because of KNOX bootloader. It has been said many times in this Q/A forum. Maybe it exists somewhere a tricky trick to do it but I'm not aware of this.
Click to expand...
Click to collapse
In Addition to @FLooDW 's answer:
Try to use Philz 6.48.4 or 6.59.0 as your recovery rather then TWRP or the old CWM (6.0.4.7), especially DON'T use the latest TWRP from their official website, its a broken build and its known to mess up the partitions! That could be your problem if you have done that before...
Any recovery you want to use, download from my RECOVERY/GUIDE thread that FLooDW linked to you, use those they work fine.
PS. before flashing official firmware with ODIN, make sure you have a custom recovery installed, then boot into recovery, wipe system/data/cache/dalvik-cache/internalSD/boot/modem etc. this is to ensure when you have flashed the firmware, there is nothing left from the previous firmware that was installed.
Note: when explaining your issue, try to do that by providing as much as possible info about your actions before and after the problem occured, that way anyone who wants to help can help you the best way possible.

MaHo_66 said:
In Addition to @FLooDW 's answer:
Try to use Philz 6.48.4 or 6.59.0 as your recovery rather then TWRP or the old CWM (6.0.4.7), especially DON'T use the latest TWRP from their official website, its a broken build and its known to mess up the partitions! That could be your problem if you have done that before...
Any recovery you want to use, download from my RECOVERY/GUIDE thread that FLooDW linked to you, use those they work fine.
PS. before flashing official firmware with ODIN, make sure you have a custom recovery installed, then boot into recovery, wipe system/data/cache/dalvik-cache/internalSD/boot/modem etc. this is to ensure when you have flashed the firmware, there is nothing left from the previous firmware that was installed.
Note: when explaining your issue, try to do that by providing as much as possible info about your actions before and after the problem occured, that way anyone who wants to help can help you the best way possible.
Click to expand...
Click to collapse
Really helpful addition !

Trying what you guys have mentioned just now, let you know as soon as :good:
What 4.4.4. om do you suggest?
Also the efs I backed up (not sure if its working or not as it was with Rom Manager)
How do I restore, can it be done with root explorer?
Tried the [ROM][i9305][18.10.15]>>>4.4.4<<<[KK][STOCK][TW][STABLE][+AROMA] S5 Elite Lite v4.0
which I posted a few days ago, left a post with no reply and thats when I started getting the null/null

PSN_AGNi_pureSTOCK-v5.9.5-4.4.x_I9305_AROMA
Currently trying this rom.. watching the installation set up and says so far that set_perm: some changes failed
used philz_touch_6.59.0-i9305
Rebooting and stays on Samsung Galaxy boot screen ??

EwOkie said:
PSN_AGNi_pureSTOCK-v5.9.5-4.4.x_I9305_AROMA
Currently trying this rom.. watching the installation set up and says so far that set_perm: some changes failed
used philz_touch_6.59.0-i9305
Rebooting and stays on Samsung Galaxy boot screen ??
Click to expand...
Click to collapse
AGNi is not a ROM, this is a kernel. Did you flash AGNi kernel over official Samsung firmware ?
As MaHo_66 said, you have to explain more what you have done and what you need if you want us to help you.

Steps :
reflashed a Stock Rom then Rooted it then added Philz Recovery
Then Tried this rom : I9305XXUFNL1_O2UFOB1_4.4.4_KK.zip
Currently trying various modems to see what this gives me
Failing this will need to try QPTS or EFS Professional again.
* I know how to flash and root roms if you look at my signature along with kernels I am basically telling you what I have tried to get
this null/null away as I think its a baseband/modem issue somewhere as I have read various posts and some people agree.
Cant even do the *#197328640# or *#*#197328640#*#* to get into certain modes
Thinking it maybe the sim card slot now .......... I am losing my mind now!

EwOkie said:
Steps :
reflashed a Stock Rom then Rooted it then added Philz Recovery
Then Tried this rom : I9305XXUFNL1_O2UFOB1_4.4.4_KK.zip
Currently trying various modems to see what this gives me
Failing this will need to try QPTS or EFS Professional again.
* I know how to flash and root roms if you look at my signature along with kernels I am basically telling you what I have tried to get
this null/null away as I think its a baseband/modem issue somewhere as I have read various posts and some people agree.
Cant even do the *#197328640# or *#*#197328640#*#* to get into certain modes
Thinking it maybe the sim card slot now .......... I am losing my mind now!
Click to expand...
Click to collapse
There are few other possible solutions you could try:
- try this, it shows you how to get in service mode and the restoring of the golden efs backup, that should be present if its good.
If above doesnt work, then try the one below.
- have you tried to flash the param_bin file? if not try that with ODIN, it might work.. file attached.
Let us know how it goes.

H yes tied that file and didnt work
will the imei work from another phone or efs?
isnt that link just gps?

HELP needed (can't flash stock rom)

Galaxy Note 5 SM-N920G I need some help here. After a long time using custom roms, recently I've tried to flash a stock rom to my device (it was an Indian nougat rom from sammobile) and I got an error on Odin when flashing system. After that I lost my recovery (TWRP) an my Note 5 went only in download mode. Then a I flashed TWRP again and installed a custom rom again. Now I'm trying to flash any stock rom and I am getting random errors like "device 1 binary 0". I've tried many different roms and 0 luck. Someone could help me here? I never have this problem before and I just don't know more what to do.

diegowebber said:
Galaxy Note 5 SM-N920G I need some help here. After a long time using custom roms, recently I've tried to flash a stock rom to my device (it was an Indian nougat rom from sammobile) and I got an error on Odin when flashing system. After that I lost my recovery (TWRP) an my Note 5 went only in download mode. Then a I flashed TWRP again and installed a custom rom again. Now I'm trying to flash any stock rom and I am getting random errors like "device 1 binary 0". I've tried many different roms and 0 luck. Someone could help me here? I never have this problem before and I just don't know more what to do.
Click to expand...
Click to collapse
Peace..
I'm having the same exact problem--I found firmware that only flashed to radio--then abruptly stopped--wiping my system, so i'm stuck in download mode, phone will not power off. Instead of flashing Nougat ROM, i opted to flash "stock" MM firmware (6.01) and let phone update to Nougat on its on---then re-root it. As of now I have a paper-weight and it appears there's no support for 920G

Have you all tried Smart Switch?

CodeNameRedNeck said:
Have you all tried Smart Switch?
Click to expand...
Click to collapse
Yes... Smart Switch gave me an error in 2 ways of restoration.

ZEDEK said:
Peace..
I'm having the same exact problem--I found firmware that only flashed to radio--then abruptly stopped--wiping my system, so i'm stuck in download mode, phone will not power off. Instead of flashing Nougat ROM, i opted to flash "stock" MM firmware (6.01) and let phone update to Nougat on its on---then re-root it. As of now I have a paper-weight and it appears there's no support for 920G
Click to expand...
Click to collapse
Paper-weight? That's bad... Can't you flash a custom recovery on Odin and install a custom rom? I still can do that.

diegowebber said:
Galaxy Note 5 SM-N920G I need some help here. After a long time using custom roms, recently I've tried to flash a stock rom to my device (it was an Indian nougat rom from sammobile) and I got an error on Odin when flashing system. After that I lost my recovery (TWRP) an my Note 5 went only in download mode. Then a I flashed TWRP again and installed a custom rom again. Now I'm trying to flash any stock rom and I am getting random errors like "device 1 binary 0". I've tried many different roms and 0 luck. Someone could help me here? I never have this problem before and I just don't know more what to do.
Click to expand...
Click to collapse
It's because you flashed Nougat and that's Android 7.0 and it now thinks you're trying to "downgrade", which is pretty much blocked by trying to use "stock" roms.. The only thing you could probably do is find the stock rom you're interested in flashing but make sure it can be flashed via TWRP.. I don't think you can use Odin now to flash backwards "downgrade" to another stock rom after flashing Nougat 7.0..

MrMike2182 said:
It's because you flashed Nougat and that's Android 7.0 and it now thinks you're trying to "downgrade", which is pretty much blocked by trying to use "stock" roms.. The only thing you could probably do is find the stock rom you're interested in flashing but make sure it can be flashed via TWRP.. I don't think you can use Odin now to flash backwards "downgrade" to another stock rom after flashing Nougat 7.0..
Click to expand...
Click to collapse
Interesting... So maybe I can wait for a nougat ZTO ROM an then try to flash? Anyway, thanks for the help

MrMike2182 said:
It's because you flashed Nougat and that's Android 7.0 and ..
Click to expand...
Click to collapse
Good catch, I hadn't even thought of that.

CodeNameRedNeck said:
Good catch, I hadn't even thought of that.
Click to expand...
Click to collapse
Well I figured out you can downgrade from Nougat to Marshmallow but that's only to a specific firmware version. Depending upon what bootloader has been flashed (meaning if you flashed Nougat bootloader you can only go back to Marshmallow with the same bootloader level).. But this is only working (surprisingly) on the locked bootloaders of Verizon and AT&T.. The other S6 Edge Plus I have with an unlocked bootloader and tripped knox that I recently acquired will not accept nothing stock which is unusual, but I'm still working on that one.

Possible to downgrade from Oreo to Nougat?

I have the leaked ver of Oreo installed, but I have an app that's incompatible with the new OS, so I've been trying to downgrade for several weeks now, with no success.
I've seen answers online that completely contradict each other- use Smart Switch backup (tried that, didn't roll back the OS), tried several versions of Odin and firmware, always get 'FAILED AUTH'.
Also seen some posts that say you can't downgrade, others that say yes you can.
Is it possible? How can I find out which bootloader I have?

I heard with Oreo they did the same as Apple do. They stop downgrading the OS, but I'm not sure about it.
I hope other members can help you.

I'm having the same issue, I have a Verizon tmb tmb vzw software version, I flashed the carrier switch CDC thing xxa I entered the codes what ever, but i don't k ow i kind of got stuck and flashed bra8 and it came up with tmobile after flashing that was my intention, and then I flashed oreo, I'm trying to roll back to update to the latest crb8 oreo but anything I try in Odin fails at initialization... or It just wont work, and the phone doesnt have a progress bar as I press start, it's like stuck, I'm losing my mind here, I even tried flashing tmobile and Verizon firmware on odin, I tried kies and switch to restore yo nougat bra8 with no go, even tried flashing the carrier switch thing, NOTHING IS WORKING different USB ports rebooting PC, reinstalled drivers, took aim out when odin, nothing.
Some one help us

Fixed
And just like that, as soon as I post this, I get it to work. After spending all night trying different versions of Prince Odin and different firmwares, I just switched to normal Odin and it worked immediately, so back to 7.1.1

can you please tell how and what you used to down grade note 8 back to 7.1.1....thanks

PAULG1919 said:
can you please tell how and what you used to down grade note 8 back to 7.1.1....thanks
Click to expand...
Click to collapse
Have you tried Odin and the firmware for your device?

as long as the version you want to downgrade to is same version bootloader would it not be fine?
ie.. v3 to v3 is fine but not v3 to v2
I haven't been rooting or flashing with the Note 8 yet but that's the understanding I have from other threads

briwil said:
And just like that, as soon as I post this, I get it to work. After spending all night trying different versions of Prince Odin and different firmwares, I just switched to normal Odin and it worked immediately, so back to 7.1.1
Click to expand...
Click to collapse
can you please share your files and steps?:good:

pls share your steps for downgrading
briwil said:
And just like that, as soon as I post this, I get it to work. After spending all night trying different versions of Prince Odin and different firmwares, I just switched to normal Odin and it worked immediately, so back to 7.1.1
Click to expand...
Click to collapse
i already tried few procedures with no luck. what do you mean in prince ODIN and normal ODIN ? i am using the latest 3.13.1, shd we use something else ?
btw, i have oreo ...U2 and the SAM nougat rom is ...U1, i cant find any nougat with U2.
appreciate any help here...
tks

I think they changed something in oreo , where you cant downgrade now. Odin. Maybe latest update annoying i know.....no work around yet

The thing is like this: you can always flash roms with EQUAL O HIGHER bootloader version, just that, and NEVER to a lower bootloader version, and this is not new

briwil said:
I have the leaked ver of Oreo installed, but I have an app that's incompatible with the new OS, so I've been trying to downgrade for several weeks now, with no success.
I've seen answers online that completely contradict each other- use Smart Switch backup (tried that, didn't roll back the OS), tried several versions of Odin and firmware, always get 'FAILED AUTH'.
Also seen some posts that say you can't downgrade, others that say yes you can.
Is it possible? How can I find out which bootloader I have?
Click to expand...
Click to collapse
Don't you want to try flashing only AP and CSC_OXM (not HOME)? I read on 4pda that it's possible, but you can have some errors while using your device.
Flash the oldest oreo with bootloader you have, then flash the latest nougat without BL and CP. Only AP and CSC OXM. Backup your data before doing it.