Can't back from Oreo to Marshmallor or Nuggat - Samsung Galaxy S7 Edge Questions and Answers

Hi.
I have the latest firmwere on my s7 edge (official oreo).
I tried flashing with odin3 3.13 Stock marshmallow and i get this :
SW REV. CHECK FAIL(BOOTLOADER). DEVICE: 2. Binary: 1.
So i tried nuggat and same thing happened
After it phone normaly boots into oreo...
Any suggestions?

szaman_456 said:
Hi.
I have the latest firmwere on my s7 edge (official oreo).
I tried flashing with odin3 3.13 Stock marshmallow and i get this :
SW REV. CHECK FAIL(BOOTLOADER). DEVICE: 2. Binary: 1.
So i tried nuggat and same thing happened
After it phone normaly boots into oreo...
Any suggestions?
Click to expand...
Click to collapse
When you are in odin you are using the oreo bootloader it will prevent you from flashing marshmallow os.
Flash the marshmallow bootloader restart then flash marshmallow os.
If your model is an American s7 then you can't downgrade bootloader.

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When will i be able to update my S5 to the latest android (6.0) ?
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Whenever you flash it from here
http://updato.com/firmware-archive-select-model?r=&v=Marshmallow(Android+6.0.1)&q=G900F
*Detection* said:
Whenever you flash it from here
Click to expand...
Click to collapse
Yes but I'm unable to find a firmware for my specific device CSC (the one i mentioned above)
I see all other Galaxy S5's from Europe got updated to 6.0.1 but my (TGY Region) one still can't...
Can i flash an S5 firmware that doesnt corespond to my model? If i install the SM-G900FXX.... will it brick my phone?
As long as it's for the G900F you won't brick it
i actually worked !
just had to wipe data factory reset afterwards !

SM-G950F Downgrade Bootloader U5 to U1 (9 pie to 7 Nougat stock)

Hi to all, i have S8 G950F, updated with odin with G950FXXU5DSFB_G950FOXM5DSFB_ITV (U5 bootloader).
So i must return to Nougat ( 7.0) : G950FXXU1AQK7_G950FOXM1AQK7_ITV U1 bootloader
but odin failed because samsung blocked downgrade firmware.
So now what i can do for install Nougat 7.0 ? it 's possibile install tswrp with no root and flash with odin 7.0 ? which version i can use?
thanks
farohp said:
Hi to all, i have S8 G950F, updated with odin with G950FXXU5DSFB_G950FOXM5DSFB_ITV (U5 bootloader).
So i must return to Nougat ( 7.0) : G950FXXU1AQK7_G950FOXM1AQK7_ITV U1 bootloader
but odin failed because samsung blocked downgrade firmware.
So now what i can do for install Nougat 7.0 ? it 's possibile install tswrp with no root and flash with odin 7.0 ? which version i can use?
thanks
Click to expand...
Click to collapse
Some people say downgrading bootloader can be possible through combination file ect but if u never use that file then don't, u can do more harm then good.
Otherwise no bootloader can't be downgraded and your stuck with pie
Search Search Search! Don't be stupid, Samsung bootloader nowaday cannot be downgrade (e.g from U5->U4)...the security check will not pass nor flashing is not possible!

SM-J530F/DS Bricked?

Soo my J5 is bootlooping after flashing stock rom via Odin (Binary 6) and it wont boot anymore. If i remember correcly the imei also was not showing up in roms and sims whould not work. Can my phone be saved?. Cannot flash a custom recovery because apparently its blocked or something like that.
Hi, write your full model name, and region firmware what was on your phone...
Samsung Galaxy J5 (2017) SM-J350F/DS J5Y17LTE.
The stock rom i flashed: J530FXXU6CTB1_J350FBTU6CSL1_BTU
I dont know the out of box region code
Hi, flash with this one...
Download Galaxy J5 SM-J530F (BTU) J530FXXS9CUE6 in Samfw - Samsung firmware download
Galaxy J5 SM-J530F (BTU - United Kingdom) J530FXXS9CUE6 Pie(Android 9) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com
No. I wanna keep Binary 6. Binary cant be downgraded and its a weird lock and older binaries are more rare these days
try a custom rom instead of sticking to android 7 with samsung bloatware..?
PhotonIce said:
try a custom rom instead of sticking to android 7 with samsung bloatware..?
Click to expand...
Click to collapse
Its stock android 9 and that board dosent have a working screen anymore. Imade a working binary 7 j5 with the parts from my bootlooping idiot so now i have 2 working j5's. Yey

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Hello I installed android 9.0 crdroid on my s8 SM G950f but when I tried to install the official firmware of it 8.0 I kept getting that error and the phone doesn't have any system so I can't boot.
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