How to downgrade from binaryU8 to binary U1? - GSM-Forum

fir8490 · 04-22-2021, 03:39

hello everyone

I have an issue trying to downgrade my SM-S357bl,when trying to do so I get this error on odin mode: SW REV. CHECK FAIL (BOOTLOADER) DEVICE 8 BINARY 1

I have unchecked bootloader, however I still get the same error,but with SYSTEM or RECOVERY.

How can I downgrade from android 9 to android 8? I could've used the same binary for downgrade,however android 9 and 8 are different binaries for my phone.

Thank you everyone for your help.

malka4u · 04-22-2021, 05:05

You cannot downgrade binary but if same binary android 8 and 9 then you can flash 9 or 8 any time you want..

debeliamark · 04-22-2021, 05:41

Quote:

Originally Posted by fir8490

...
How can I downgrade from android 9 to android 8? I could've used the same binary for downgrade,however android 9 and 8 are different binaries for my phone.
....

You cannot downgrade with official firmware this Galaxy J3 Orbit from Android 9 [ Pie ] to Android 8 [ Oreo ].
The latest Oreo firmware is S357BLUDU2ASC2, but the first Pie is S357BLUDU3BSH3 - so bootloader is updated. no way back.

The possibility to run Oreo is via unlocking bootloader, flashing custom recovery and use custom ROM. The J3 Orbit probably have hidden OEM unlocking, so you need enable it first.

fir8490 · 04-22-2021, 13:51

Well,I did not find the OEM unlock in my settings,but I managed to enable it using the combination file that I currently have,however I couldn't find any custom recovery for my phone,such as twrp,where can I find it?

slickrider · 04-22-2021, 18:30

if you have the combination why do you want a custom recovery?

fir8490 · 04-22-2021, 20:59

Because after flashing combination,I tried and I still get binary error for some reason,so I want to go back using custom recovery since I can't downgrade directly apparently.

nazuo · 04-25-2021, 00:47

now way to do that.......

fir8490 · 04-25-2021, 01:45

What do you mean by that,I'm pretty sure it's possible to downgrade,we have to find a way to do so.

Desirat · 04-25-2021, 08:48

Quote:

Originally Posted by fir8490

What do you mean by that,I'm pretty sure it's possible to downgrade,we have to find a way to do so.

No, you are not pretty sure. For ages the gsm community knows that downgrade bootloader its not possible with official firmware, not even with fac fw, not even unlocking bootloader...

Related to twrp, some developers are needed to, you know, develop a custom recovery.
It won't fall from the sky, so the "sure, i need it so there must be one" isn't valid as we aren't in the land of rainbows and unicorns (i wish).

If there is no interest in developing a custom recovery for that model, samsung will not develop one, and on this you can be sure.

If on xda developers or other similar forum, where people devote their time to do this, did not appear any custom recovery developed for this particular model, you won't find one and that's a sure thing. So, if no custom recovery, definitely there isn't a custom firmware as there is no way to reprogram the CFW without custom recovery. Even then, from my late experiments, most custom firmware build lately need to have the latest bootloader, latest modem, else they wont work correctly, if at all.

What could be done here is root bootloader or recovery with tools like eft and others and that could only help develop a custom recovery by knowing the proper partitions. But it wont build a recovery able to do what you wish it could be done.

Good luck.

ivorocio · 05-31-2021, 19:18

Hi

I need help , if someone knows solution please please write me.
Problem:
I have Samsung s10, I think 30th of March i updated my android from Android 10 to 11, since that day i have very very low cell network signal . On the beginning i was not sure what happened but after few days researching and downgrading my android to Android 10 ( it was possible because Bit/SW REV.
Security Patch Lvl. it was the same 9 ) after the downgrade i was having good signal on 3G and 4G also. So the conclusion was that the update made something. I decided to return the android to 11 and waiting another update. Now , like you know , there is new update , from May. I updated my phone and again same problem . So i decided to go back again. When i tried to downgrade i saw that Samsung changed the SW REV to A , and now i cant go back

. I called to samsung and still i am waiting answer from them . Please help me if someone knows some kind of solution . If i can go to Android 10 again it will be great, just to use my phone, still it is in good condition , like new.
Thank you for reading my letter

Greetings
Ivo from Macedonia

shahzaibzah00r · 02-01-2023, 19:57

Samsung Galaxy A32 SM-A325F U2 Downgrade To U1
How To flash SM-A325F U2 with U1?
1. Ensure Your Device Bootloader Status is Unlocked

2. Before Proceeding with Next Operation Make You Make a Personal Copy of Your Mobile Super.img [Back it Up]

3. Write the DownGrade Firmware with any Compatible MTK Testpoint Flasher Tool [UnlockTool is Recommended]

4. Write the Root.tar Firmware via Testpoint as well.

5. Reassemble and Reboot Device

6. Downgrade and Root Complete

7. Welcome Back to Bit 1

AgicAga · 02-01-2023, 20:15

Quote:

Unhappy How to downgrade from binaryU8 to binary U1?
hello everyone

I have an issue trying to downgrade my SM-S357bl,when trying to do so I get this error on odin mode: SW REV. CHECK FAIL (BOOTLOADER) DEVICE 8 BINARY 1

I have unchecked bootloader, however I still get the same error,but with SYSTEM or RECOVERY.

How can I downgrade from android 9 to android 8? I could've used the same binary for downgrade,however android 9 and 8 are different binaries for my phone.

Thank you everyone for your help.

https://samfw.com/firmware/SM-S357BL/TFN
download last version and flash device

shahzaibzah00r · 02-02-2023, 09:40

Quote:

Originally Posted by AgicAga

https://samfw.com/firmware/SM-S357BL/TFN
download last version and flash device

I have N975F U8 and want to downgrade to U7 for repair imei etc so please guide me if there's any way to downgrade the binary

AgicAga · 02-02-2023, 10:22

Quote:

I have N975F U8 and want to downgrade to U7 for repair imei etc so please guide me if there's any way to downgrade the binary

it is not possible to downgrade the boot version, check if any of the tools support your software version, if not, wait for the update

AgicAga · 02-02-2023, 10:22

Quote:

I have N975F U8 and want to downgrade to U7 for repair imei etc so please guide me if there's any way to downgrade the binary

it is not possible to downgrade the boot version, check if any of the tools support your software version, if not, wait for the update

04-22-2021, 03:39	#1 (permalink)
fir8490 Junior Member Join Date: Apr 2021 Location: canada Posts: 35 Member: 2985195 Status: Offline Thanks Meter: 1	How to downgrade from binaryU8 to binary U1? hello everyone I have an issue trying to downgrade my SM-S357bl,when trying to do so I get this error on odin mode: SW REV. CHECK FAIL (BOOTLOADER) DEVICE 8 BINARY 1 I have unchecked bootloader, however I still get the same error,but with SYSTEM or RECOVERY. How can I downgrade from android 9 to android 8? I could've used the same binary for downgrade,however android 9 and 8 are different binaries for my phone. Thank you everyone for your help.

05-31-2021, 19:18	#10 (permalink)
ivorocio Junior Member Join Date: May 2021 Location: Macedonia Age: 42 Posts: 1 Member: 2988271 Status: Offline Thanks Meter: 0	Samsung S10 cell network low signal Hi I need help , if someone knows solution please please write me. Problem: I have Samsung s10, I think 30th of March i updated my android from Android 10 to 11, since that day i have very very low cell network signal . On the beginning i was not sure what happened but after few days researching and downgrading my android to Android 10 ( it was possible because Bit/SW REV. Security Patch Lvl. it was the same 9 ) after the downgrade i was having good signal on 3G and 4G also. So the conclusion was that the update made something. I decided to return the android to 11 and waiting another update. Now , like you know , there is new update , from May. I updated my phone and again same problem . So i decided to go back again. When i tried to downgrade i saw that Samsung changed the SW REV to A , and now i cant go back . I called to samsung and still i am waiting answer from them . Please help me if someone knows some kind of solution . If i can go to Android 10 again it will be great, just to use my phone, still it is in good condition , like new. Thank you for reading my letter Greetings Ivo from Macedonia

02-01-2023, 19:57	#11 (permalink)
shahzaibzah00r Junior Member Join Date: Jun 2022 Location: Rawalpindi Posts: 21 Member: 3015682 Status: Offline Sonork: 100.28977 Thanks Meter: 1	Samsung Galaxy A32 SM-A325F U2 Downgrade To U1 Samsung Galaxy A32 SM-A325F U2 Downgrade To U1 How To flash SM-A325F U2 with U1? 1. Ensure Your Device Bootloader Status is Unlocked 2. Before Proceeding with Next Operation Make You Make a Personal Copy of Your Mobile Super.img [Back it Up] 3. Write the DownGrade Firmware with any Compatible MTK Testpoint Flasher Tool [UnlockTool is Recommended] 4. Write the Root.tar Firmware via Testpoint as well. 5. Reassemble and Reboot Device 6. Downgrade and Root Complete 7. Welcome Back to Bit 1

04-22-2021, 05:05	#2 (permalink)
malka4u No Life Poster Join Date: Aug 2011 Location: bagmati pradesh Posts: 3,296 Member: 1626780 Status: Offline Thanks Meter: 1,275	You cannot downgrade binary but if same binary android 8 and 9 then you can flash 9 or 8 any time you want..

04-22-2021, 13:51	#4 (permalink)
fir8490 Junior Member Join Date: Apr 2021 Location: canada Posts: 35 Member: 2985195 Status: Offline Thanks Meter: 1	Well,I did not find the OEM unlock in my settings,but I managed to enable it using the combination file that I currently have,however I couldn't find any custom recovery for my phone,such as twrp,where can I find it?

04-22-2021, 18:30	#5 (permalink)
slickrider Insane Poster Join Date: Aug 2008 Location: Saturn Posts: 75 Member: 832640 Status: Offline Thanks Meter: 9	if you have the combination why do you want a custom recovery?

04-22-2021, 20:59	#6 (permalink)
fir8490 Junior Member Join Date: Apr 2021 Location: canada Posts: 35 Member: 2985195 Status: Offline Thanks Meter: 1	Because after flashing combination,I tried and I still get binary error for some reason,so I want to go back using custom recovery since I can't downgrade directly apparently.

04-25-2021, 00:47	#7 (permalink)
nazuo Junior Member Join Date: Jul 2006 Location: Al Marj Posts: 21 Member: 319547 Status: Offline Thanks Meter: 8	now way to do that.......

04-25-2021, 01:45	#8 (permalink)
fir8490 Junior Member Join Date: Apr 2021 Location: canada Posts: 35 Member: 2985195 Status: Offline Thanks Meter: 1	What do you mean by that,I'm pretty sure it's possible to downgrade,we have to find a way to do so.