Trying to downgrade from 7.0 (3/2018) to 6.0.1 (2/2017), Odin not working

[resarfekim]

Hi, I'm trying to downgrade from 7.0 to 6.0.1. Odin keeps failing.
When Odin fails (after NAND write start), I see an error pop up on the Download mode screen (red letters):
SW REV. CHECK FAIL. DEVICE: 6, BINARY: 5

Tried different versions of Odin, and made sure I had a good copy of the right version of firmware from Sammobile.

Any idea if it's possible? Is there another way to do this besides Odin? Phone is not rooted, stock, Knox intact.

I've been off Samsung for a few years, and my memory is spotty... but would it help if I installed a Recovery, then flashed a custom 6.0.1 rom? Or is that also a problem?


Thanks for any help!
Mike

 

[Youdoofus]

Hi, I'm trying to downgrade from 7.0 to 6.0.1. Odin keeps failing.
When Odin fails (after NAND write start), I see an error pop up on the Download mode screen (red letters):
SW REV. CHECK FAIL. DEVICE: 6, BINARY: 5

Tried different versions of Odin, and made sure I had a good copy of the right version of firmware from Sammobile.

Any idea if it's possible? Is there another way to do this besides Odin? Phone is not rooted, stock, Knox intact.

I've been off Samsung for a few years, and my memory is spotty... but would it help if I installed a Recovery, then flashed a custom 6.0.1 rom? Or is that also a problem?


Thanks for any help!
Mike

the failure message is saying that your phone has a version 6 bootloader and youre trying to flash a version 5 bootloader. you cant downgrade from 6 to 5. sorry mate, nothin' doin'