Downgrade S7 impossible

[Ryu87]

First hello to everyone!hello!it's a pleasure to be here!i'm here to ask your help!i try to downgrade my S7 from Android 7 Nougat to Android 6.0.1,but when i try to do the operation,for the first time downgrade fail,i unlock OEM and USB debugging,i think it's something bootloader?and what the hell is that PIT??.-. ,i try to root,to install twrp ALWAYS the same,i used different verions of odin; my S7 is no brand ITV.However this is what Odin say,any idea?thanks!:


<id:0/004>Set PIT file..
<id:0/004>DO NOT TURN OFF TARGET!!
<id:0/004>get pit for mapping..
<id:0/004>complete(write) operation failed. always that message!

 

[umbreonsenpai]

First hello to everyone!hello!it's a pleasure to be here!i'm here to ask your help!i try to downgrade my S7 from Android 7 Nougat to Android 6.0.1,but when i try to do the operation,for the first time downgrade fail,i unlock OEM and USB debugging,i think it's something bootloader?and what the hell is that PIT??.-. ,i try to root,to install twrp ALWAYS the same,i used different verions of odin; my S7 is no brand ITV.However this is what Odin say,any idea?thanks!:
View attachment 263877View attachment 263878

<id:0/004>Set PIT file..
<id:0/004>DO NOT TURN OFF TARGET!!
<id:0/004>get pit for mapping..
<id:0/004>complete(write) operation failed. always that message!

I have the same problem except that mine is a g930P