DOWNGRADE HELL ! HELP ! 5.1.1 > 4.4.4 - Galaxy Note 4

[manorouss]

Hi guys!
I have an Galaxy note 4 locked to sprint, so i am trying to downgrade the OS from 5.1.1 to 4.4.4 so i can unlock it with the SSU unlock tool but every time i try it i get this error,
SW REV CHECK FAIL : [aboot]Fused 4 > Binary 1
[1]eMMC write fail : ABOUT.
I have tried everything changing computers, USB ports , different cables, but seems like no way out of it .

it would be amazing if someone could shed some light on this matter! also regarding the unlock if anyone has some ideas if it really works or not.

I have attached some pictures and info about the device.

Thanks !

 

[gozirra]

Most models have "hardware fuses" that are purposely blown during upgrade to prevent you from being able to downgrade. Your error message confirms that is the case for your phone.

 

[manorouss]

So I have absoulty no chance of downgrading? If so, what are my chances of unlocking the mobile?

 

[gozirra]

Unlock codes don't work on the Sprint & Verizon models, sorry.

 

[N4Newbie]

So I have absoulty no chance of downgrading? If so, what are my chances of unlocking the mobile?

You could always call Sprint and ask them for the correct unlock codes...

 

[manorouss]

haha thanks you for all your help guys!

 

[mrcrane]

I have Note 2 from ATT, which is different. But I was able to downgrade from 4.4.2 to 4.1.1 using Odin v3.07.
After Flashing when I inserted my MetroPcs card I got error #66M. I researched it online, and it said either corrupt
imei or phone reported stolen. So, I took it to MetroPcs and it was activated by them.