Error and unable to restore

[donc93]

I was using the Mojave to run viuex with python 3.7 for downgrading iPad mini 2 and iPhone 5s (6,2). iPad has succeeded to downgrade to iOS 10.3.3. But my iPhone 5s failed, it shows the message of
“Sending NORData now...
Done
sending NORData
ERROR: Unable to receive message from FDR 0x7fc2fc93e000 (-2). 0/2 bytes. “

I tried to restore latest iOS version to fix it with iTunes but still failed . It shows Error 9.
How to fixed it?
Please advise.

[kiralabs]

Unfortunately, Error 9 is typically Logic Board damage. Sometimes from using the wrong screws in the board or NAND/Baseband issues, but as you're failing on NORData, I assume its NAND.

[donc93]

I didn’t remove any boards from my iPhone 5s. Before the process of downgrading, everything works fine. Anyone knows how to fix it?

[kiralabs]

I didn’t remove any boards from my iPhone 5s. Before the process of downgrading, everything works fine. Anyone knows how to fix it?

Please try using 3u tools pro mode to restore