Can't downgrade from 9.0 Pie back to 8.0 Oreo

Constellation

Can't downgrade from 9.0 Pie back to 8.0 Oreo

I couldn't downgrade my S9 SM-G960UZ from 9.0 back to 8.0. I'm using Smart Switch but it just stuck at 0% for hours. Can someone shed lights on this problem. Thank You

 

 

4 REPLIES
Constellation

Re: Can't downgrade from 9.0 Pie back to 8.0 Oreo

Download stock Odin files then flash

Constellation

Re: Can't downgrade from 9.0 Pie back to 8.0 Oreo

Do you know what Odin files are needed? I tried some that I found and it didn't work.
Constellation

Re: Can't downgrade from 9.0 Pie back to 8.0 Oreo

[ Edited ]

Depends on what carrier and which version of Galaxy you have 

Asteroid

Re: Can't downgrade from 9.0 Pie back to 8.0 Oreo

Use Samsung Switch app for your Computer