Downgrade - Samsung Galaxy J5 Questions & Answers

Does anyone knows how can I downgrade j510fn from u2 to u1 booloader?

Kazakos22 said:
Does anyone knows how can I downgrade j510fn from u2 to u1 booloader?
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Tried flashing u1 based firmware via odin?

Haxomen said:
Tried flashing u1 based firmware via odin?
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yeah, fails (even with phone bootloader update ticked) and I even created tar to downgrade bootloader and Modem only and that failed aswell =[

Related

Downgrade n910h to kk

I updated my N910H to the COJ4 FW and now everytime I try flashing any othe FW I get SWREV error. I need to downgrade the bootloader so as to install KK FW. Please help
Muthumbi said:
I updated my N910H to the COJ4 FW and now everytime I try flashing any othe FW I get SWREV error. I need to downgrade the bootloader so as to install KK FW. Please help
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What was your bootloader before?
usmann_090 said:
What was your bootloader before?
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COH2. I never had a problem downgrading before till I flashed COJ4
Muthumbi said:
COH2. I never had a problem downgrading before till I flashed COJ4
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From where did you find this bootloader?
& what modern youare using right now ?
usmann_090 said:
From where did you find this bootloader?
& what modern youare using right now ?
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Sammobile. I am using COJ2 modem
Muthumbi said:
Sammobile. I am using COJ2 modem
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You flahed the stock ROM & bootloader along with it
Or just flahsed boot loader and modem ?
& are there any problems on this bootloader due to which you want to return back to kk?

****URGENT**** How do i update my Bootloader and my modem?

Is it as simple as grabbing that latest firmware on Sammobile and flashing it through odin? Because i want to be running everything up to date.!
shotgun10ga said:
Is it as simple as grabbing that latest firmware on Sammobile and flashing it through odin? Because i want to be running everything up to date.!
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why is urgent ? I do not understand?

Combination File Flashing Issue

Every time I try to flash the combination file for 950U, it fails immediately and throws the "SW REV CHECK FAIL" error.
I'm on latest BQL1 and trying to swap CSC using the method posted here before.
Any suggestions?
goldieDEV said:
Every time I try to flash the combination file for 950U, it fails immediately and throws the "SW REV CHECK FAIL" error.
I'm on latest BQL1 and trying to swap CSC using the method posted here before.
Any suggestions?
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Either use comsey or u have the u1 combo firmware
TheMadScientist said:
Either use comsey or u have the u1 combo firmware
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I've used comsy and it still fails..
When you mention u1 are you referring to the unlocked firm or the baseband.
Edit: U1 is the only combo I can find for 950U.
I'm trying to change VZW to TMB.
goldieDEV said:
I've used comsy and it still fails..
When you mention u1 are you referring to the unlocked firm or the baseband.
Edit: U1 is the only combo I can find for 950U.
I'm trying to change VZW to TMB.
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The firmware u mention u was on is a u2 bootloader and u may have the u1 bootloader firmware
TheMadScientist said:
The firmware u mention u was on is a u2 bootloader and u may have the u1 boooader fiemware
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Where could I find a U2 combo?
I can't dowgrade which sucks
goldieDEV said:
Where could I find a U2 combo?
I can't dowgrade which sucks
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I am at work but i will find the link i saw of it and post it in a hour or so
TheMadScientist said:
I am at work but i will find the link i saw of it and post it in a hour or so
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Thanks. The only combo I can find for U2 is for the Note 8 (N950U)
goldieDEV said:
Thanks. The only combo I can find for U2 is for the Note 8 (N950U)
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https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
TheMadScientist said:
https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
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THANK YOU
TheMadScientist said:
https://forum.xda-developers.com/showpost.php?p=74962800&postcount=433
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Hey buddy can you help me with indian csc file tired flashing indian firmware but it detects btc/btc/btc
I want to use reliance jio sim in it and samsung pay in india
My model no is 950fd thank u
wtf!!droid said:
Hey buddy can you help me with indian csc file tired flashing indian firmware but it detects btc/btc/btc
I want to use reliance jio sim in it and samsung pay in india
My model no is 950fd thank u
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I dont know anything about cross flashing them yet Every time I flash xaa unlocked firmware mine defaults back to my stock csc I am still new to cross carrier firmwares lol
TheMadScientist said:
I dont know anything about cross flashing them yet Every time I flash xaa unlocked firmware mine defaults back to my stock csc I am still new to cross carrier firmwares lol
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Mine is international variant but still facing this issue :crying:
Hello ...
I am trying to find the Samsung S8 Plus G955W combination firmware files (free). Does anybody know where I can find them? This site has all but the G955W //combinationfirmware.com/samsung-s8-plus-sm-g950fd-g955n-g892u-g9500/
Thank you!

Downgrade to Marshmallow

Hi, I want to downgrade back to Android 6.0.1 Marshmallow by flashing it through Odin. But when it starts flashing, the box says FAIL. Any solution to fix this? Thank you in advance.
Current Version on my J5 Prime: G570YDXU2BRC1 (XTC)
NoorSyafiq2014XDA said:
Hi, I want to downgrade back to Android 6.0.1 Marshmallow by flashing it through Odin. But when it starts flashing, the box says FAIL. Any solution to fix this? Thank you in advance.
Current Version on my J5 Prime: G570YDXU2BRC1 (XTC)
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Before flashing the firmware you need to flash the marshmallow bootloader and modem for your device then you can successfully flash firmware.
garylawwd said:
Before flashing the firmware you need to flash the marshmallow bootloader and modem for your device then you can successfully flash firmware.
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this is what i get
NoorSyafiq2014XDA said:
this is what i get
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Try just ticking tp in Odin not all of them
garylawwd said:
Try just ticking tp in Odin not all of them
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What do you mean my "ticking tp in odin not all of them"? Sorry im slightly confused a little.
NoorSyafiq2014XDA said:
What do you mean my "ticking tp in odin not all of them"? Sorry im slightly confused a little.
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AP I mean sorry. Look at all the boxes you ticked to flash on the right hand side. Only AP should be selected
garylawwd said:
AP I mean sorry. Look at all the boxes you ticked to flash on the right hand side. Only AP should be selected
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I tried, and it downgraded to Marshmallow. But it doesn't downgrade the bootloader.

Help me identify the correct FW to flash/update to Pie 9.0

I have an Sprint Samsung S8. I want to update to Android Pie 9. Its currently on Android 8.0.0 - R16NW.G950USQU5CSA4. And I want to flash with Odin to any compatible Android Pie FW. I am personally not looking to unlock or anything. The confusing part is that when I research the FW version (G950USQU5CSA4) it comes as a Verizon FW. So I am not sure if is safe to flash any of the Pie FW available on sammobile for Sprint.
It is safe to flash for example to one like G950USQU5DSD3 that appears in Sammobile and is for Sprint?
BobAt1080p said:
I have an Sprint Samsung S8. I want to update to Android Pie 9. Its currently on Android 8.0.0 - R16NW.G950USQU5CSA4. And I want to flash with Odin to any compatible Android Pie FW. I am personally not looking to unlock or anything. The confusing part is that when I research the FW version (G950USQU5CSA4) it comes as a Verizon FW. So I am not sure if is safe to flash any of the Pie FW available on sammobile for Sprint.
It is safe to flash for example to one like G950USQU5DSD3 that appears in Sammobile and is for Sprint?
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Ur fw is sm-g950u
kpwnApps said:
Ur fw is sm-g950u
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Gotcha, so should I install/flash with Odin any SM-g950u fw for Sprint available on Sammobile?
BobAt1080p said:
Gotcha, so should I install/flash with Odin any SM-g950u fw for Sprint available on Sammobile?
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Yes
kpwnApps said:
Yes
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Awesome, thank you!
For any newbie like me who ever had a look at this thread. This definitely work as said by @kpwnApps, I downloaded SM-G950U, build G950USQU5DSD3 (3.92GB) from Sammobile and flashed with Odin. Flashed AP, BL, CP, CSC (not CSC_HOME) on its respective place on Odin. 5m 32s later it was updated with no trouble.
BobAt1080p said:
For any newbie like me who ever had a look at this thread. This definitely work as said by @kpwnApps, I downloaded SM-G950U, build G950USQU5DSD3 (3.92GB) from Sammobile and flashed with Odin. Flashed AP, BL, CP, CSC (not CSC_HOME) on its respective place on Odin. 5m 32s later it was updated with no trouble.
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Thanks
kpwnApps said:
Thanks
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Last question, I am personally not interested. Just curious. As long as is the same android version, would it be possible to downgrade too by flashing with Odin and earlier version? or would something like that cause a brick?
BobAt1080p said:
Last question, I am personally not interested. Just curious. As long as is the same android version, would it be possible to downgrade too by flashing with Odin and earlier version? or would something like that cause a brick?
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It depends on bootloader version but it doesnt brick anything

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