Can I revert to older firware on my G920F? - Galaxy S6 Q&A, Help & Troubleshooting

So I recently bought a used SGS6 (SM-G920F) with Nougat installed on it, but I don't like it. I've tried reverting back to Marshmallow via Odin, but I'm getting the "sw rev check fail" error, which probably means the firmware I'm trying to install is older than the one already on the phone, which would be correct.
Is there any way to bypass this, or am I stuck on Nougat forever?

Related

Updating help

Hey guys,
I have been using a 5.0.2 rooted firmware for the longest time possible and it is time for my to update my firmware because of certain battery issues.
How should I go about updating it? I did supersu's full unroot and tried the original software update but I still get the error message saying that my firmware is modified.
Tried out smart switch restore+update but after downloading the firmware and putting my phone to download mode, it gets stuck at 0%, not sure if its my wire issue because its a 3rd party wire, lost all my original wires so far with no more ideas I can come up with.
I am currently downloading my firmwares from sammobile which is taking ages, with the risk of the download corrupting halfway through. Can I flash a 6.0.1 stock firmware on my 5.0.2 and magically everything will work and my phone will be on 6.0.1 and then I can proceed to root it again? My download mode shows that I am using official samsung firmware but its custom. Or do I need to find a 5.0.2 stock firmware then flash it and update from there? I can't find my region's 5.0.2 anymore because its too old, I'm from Singapore by the way.
Any help is greatly appreciated, have been trying for 6 hours to get this to work so far and frankly I dont think I want to go through the trouble of rooting once I update to 6.0.1 because of this cumbersome process just to try and minimize battery drain.
Fixed the issue, smartswitch works, the usb I was using was plugged through my keyboard, not straight to my motherboard so transferring of files couldn't happen

Note 5 on TotalWireless won't update past PD4?

I bought a refurbished Galaxy Note 5 and have used it on TotalWireless for a few days before I noticed the Note 5 should be on BPF4. When I received the phone it was already on BPD4, my wife's phone upgraded from a 5.1.1 firmware and went through the full chain to BPF4 previously. Will an ODIN flash back to a 5.1.1 firmware allow my phone to pass where it is stuck currently?
Thanks
NeoandGeo said:
I bought a refurbished Galaxy Note 5 and have used it on TotalWireless for a few days before I noticed the Note 5 should be on BPF4. When I received the phone it was already on BPD4, my wife's phone upgraded from a 5.1.1 firmware and went through the full chain to BPF4 previously. Will an ODIN flash back to a 5.1.1 firmware allow my phone to pass where it is stuck currently?
Thanks
Click to expand...
Click to collapse
Why don't you just download BPF4 and flash via odin? I'd make sure you didn't receive a fake phone before you flash anything as long as the phones real you can just flash it yourself in odin and setup the network to use the right settings from Totalwireless. The only reason I mentioned a fake phone is because someone else wanted to do the same thing and ended up with a phone that he couldn't find the firmware for because it was fake and after trying to flash Verizon firmware which failed he had no way to go back!
It's definitely a genuine Note 5. I was trying to locate the PF4 firmware to flash via ODIN, but the only ones I could find were several 5.1.1 firmwares and the PD4 firmware I was already on, do you have a link to a full PF4 firmware? Must have had research failure or something, haha. I finally decided to try the Verizon Upgrade Assistant and it was able to update me to the latest PF4 firmware no problem.
Download Samsung Smart Switch for PC.
You won't get OTA updates unless you have an active Verizon sim card.
Using Smart Switch to update is much easier than Odin.
I'll try Smartswitch when the next OTA comes out. I was actually surprised how well the Verizon software worked to fix the issue. In the past I always ignored the software install portion of USB connection. Guess it serves a purpose now.

Canadian S6 - Trying to Downgrade

Hi all,
I have an S6 that I am trying to downgrade. It is on 6.0.1 but reboots randomly multiple times a day. I downloaded 5.0.2 stock firmware for Bell and tried to flash via Odin but receive the following error:
sw rev. check fail device 4 binary 1
Not 100% sure what it means. I think the device 4 means that it has been updated and can't be reverted to a lower firmware. If I am wrong, hopefully someone can correct me or provide some guidance. I have already tried clearing the cache and using smart switch to reload the os.
Model is G920W8.
Yeah, I'm on the same boat. I would love an expert to correct me if I'm wrong, but I think once you are past a certain revision of Marshmallow there's no turning back and you basically have to stick with your firmware or move on to a newer one.
You can't downgrade 5.0.2 or 5.1.1 anymore.
Damn, I thought so. If anyone else has ever resolved the random reboot I would love to hear about it. It's such a pain.

G920F won't flash, SW REV check failed

Hello everyone, I searched here and found several discussions on this problem, but didn't found a solution.
My friend gave me a G920F with a bootlop problem (stock Samsung ROM), it also has a broken recovery which doesn't load at all. I can only go into Download Mode. The fact is, downloading the latest available firmware for ITV, dated 30th March if I remember well, with Nougat, I get the error message on the phone: SW REV CHECK FAIL: DEVICE 6, BINARY 5. Now, how the hell is possible that the phone has a bootloader version greater than the latest firmware available to download?My friend told me she updated the phone few days ago, so it could clearly be the 30th March, which is also the firmware I'm trying to install with ODIN. Anyone could help? I can't really figure it out.
Hi, I've got the same problem. I had stock Nougat on my G920F. Never rooted. Then I recieved a call form unknown caller and the phone crashed. Now it's in a bootloop. I can't access recovery menu, only download mode. Odin fails to push the latest software and I get "SW REV CHECK FAIL: DEVICE 6, BINARY 5" on the phone. I've tried SmartSwitch but it doesn't support G920F anymore. I tried to find sth in here but the only solution I found is to get AOKP, which is dead with no download link. Please help.
I have the same problem. I installed TWRP and LineageOS and want to go back to stock. I downloaded firmware for the phone, start it in Odin and it says in Download screen on the phone: "[CM] SW REV. CHECK FAIL. DEVICE: 6, BINARY 5". I Googled it and only found that I'm possibly flashing older bootloader than what I already have. I updated my phone when it was on stock like 2 days ago.
I will try and download newest firmware I can find, 4/4/2018. and see if it works then.
-------------------EDIT--------------------
It worked! I downloaded a ROM from sammobile from 4/4/2018, can't remember which one exactly but it doesn't matter and I didn't get any issues. Everything works fine now.
pilicar said:
I have the same problem. I installed TWRP and LineageOS and want to go back to stock. I downloaded firmware for the phone, start it in Odin and it says in Download screen on the phone: "[CM] SW REV. CHECK FAIL. DEVICE: 6, BINARY 5". I Googled it and only found that I'm possibly flashing older bootloader than what I already have. I updated my phone when it was on stock like 2 days ago.
I will try and download newest firmware I can find, 4/4/2018. and see if it works then.
-------------------EDIT--------------------
It worked! I downloaded a ROM from sammobile from 4/4/2018, can't remember which one exactly but it doesn't matter and I didn't get any issues. Everything works fine now.
Click to expand...
Click to collapse
so it works?!

Need Help With My S6 ASAP Please.

Hello wise people of XDA,
This is my first post.
I currently use an S6 G920F United Kindom unlocked as my phone and i have been using this phone for a long time. Now its past its warranty I decided to root the phone and see what i can do with it and get rid of the bloatware. Normally i either use KingoRoot or KingRoot but both failed so I searched around on the internet and came across CF Auto Root. After seeing it was successful for others i jumped on the bandwagon. I rooted it and everything was golden until i came across a problem, it would randomly turn off. This was random and infrequent. but not it happens like 5 times a day so i decided to flash a stock rom. For some strange reason Sam mobile wont let me download a stock Rom so after poking around the internet i have download a few stock roms however they always fail in Odin. Now my phone wont even boot as it says "error occured while updating use smart switch emergency recovery feature" so i go onto the Smart switch PC app and then it doesnt recognise. After 2 days of trying i haven't had any luck so I don't know what to so. Every time I try flashing something, when it fails i get some red text on the phone which I don't understand.
Someone please help me as I cant just buy a new phone and this is the only phone i have got. Any help would be very grateful and please don't hesitate to ask any questions.
Edit:
It says on the Download Screen:
Odin Mode
Product Name: SM-G920F
Current Binary: Custom
System Status: Custom
Reactivation Lock: Off
Secure Download: Enabled
Knox Warranty Woid : 1 (0x0500)
RP SWREV: B:6 K:2 S:2
(When it fails it says) SW REV. Check Fail. Device:6 . Binary: 5
Hopefully that helped.
Somewhere in the middle of the firmware version there's either S5 or U5, on the firmware you are trying to flash. On the phone either S6 or U6 is installed, and there's downgrade prevention. You need firmware with S6 or U6. By S6 I don't mean the phone, it is just a version code.
Generally look for the firmware meant for the phone's region, though on websites the displayed region might be incorrect.
If the cellular fails change the firmware or wipe data (not efs!!!!!).
Bryan48765 said:
Somewhere in the middle of the firmware version there's either S5 or U5, on the firmware you are trying to flash. On the phone either S6 or U6 is installed, and there's downgrade prevention. You need firmware with S6 or U6. By S6 I don't mean the phone, it is just a version code.
Generally look for the firmware meant for the phone's region, though on websites the displayed region might be incorrect.
If the cellular fails change the firmware or wipe data (not efs!!!!!).
Click to expand...
Click to collapse
What do I do? I have like 10 different "stock roms" claiming to be United Kindgom BTU at Android 7.0 but all are failing. And I do not know what you mean by S5/6 and U5/6. And now i get a different error message. When it fails it now says Binary: 1. I don't know what to do!
Thanks for the quick reply and appreciate the help.
wasim.1.wt said:
What do I do? I have like 10 different "stock roms" claiming to be United Kindgom BTU at Android 7.0 but all are failing. And I do not know what you mean by S5/6 and U5/6. And now i get a different error message. When it fails it now says Binary: 1. I don't know what to do!
Thanks for the quick reply and appreciate the help.
Click to expand...
Click to collapse
The firmware version(s) look like this,
G920FXXU6ERF5 . If there is U6 on the device and the U5 is flashed, it won't work. There are a few firmware 'components' inside the zip or whatever, and all of these must have the same or a higher version in the middle. New firmware might require odin 3.13.1 but should not show this error.
Bryan48765 said:
The firmware version(s) look like this,
G920FXXU6ERF5 . If there is U6 on the device and the U5 is flashed, it won't work. There are a few firmware 'components' inside the zip or whatever, and all of these must have the same or a higher version in the middle. New firmware might require odin 3.13.1 but should not show this error.
Click to expand...
Click to collapse
I see. All this time i have been flashing the likes of U1 and U3 . So which version should I be flashing? U5 or U6?
Many Thanks!!!!
wasim.1.wt said:
I see. All this time i have been flashing the likes of U1 and U3 . So which version should I be flashing? U5 or U6?
Many Thanks!!!!
Click to expand...
Click to collapse
U6/S6, "Device:6" is in the odin log so it's already 6 and won't return to 5.

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