Water damage iPhone SE Error 50

Hi There,

Just looking at an iPhone SE that sustained water damage.

We have disassembled and ultrasonically cleaned to a point that is a lot better than it was.

It came up in recovery mode and would instantly enter it again if you exited this with Recboot or 3UTools it would instantly re-enter recovery mode.

When an update is attempted (both with iTunes and 3UTools) we get error 50. It finishes writing the new iOS to the device but fails at a point that we believe is related to baseband.

Any advice would be great (i.e. any of the baseband IC chips that are not needed for boot and can be removed).

Thank you.