BTT OCTOPUS PRO V1.0 , TMC CONNECTION ERROR ---> Defective D41 Diode

[Tijeff]

I have a OCTOPUS PRO V1.0 populated with 4 TMC5160 
Using Marlin 2.1.2 

From Day1 
Stepper worked , But I got the TMC CONNECTION ERROR , on the LCD 

And the 
 RECV: Testing X connection... Error: All HIGH
 RECV: Testing Y connection... Error: All HIGH
 RECV: Testing Z connection... Error: All HIGH
 RECV: Testing E connection... Error: All HIGH
 From the M122 commands 

Since the Stepper still worked (motor moving) 
The TMC init is fine  
so, The CPU connection to the TMC MOSI+CS+CLK are working fine 
But the data back to the CPU (MISO) is not making it 

Poking around with my oscilscope , I found out the MISO signal is fine up to the U27A chip ( 5v to 3.3v level shifter) 
But not after the D41 Diode. 

Soldering this diode In and out is beyong my soldering skills 

But I manage to Bypass the diode with Patching a wire on the unpopulate pad of R204 linking to the Diode , AND to the SPI1_MISO pin on EXP2 

By Bypassing this diode (replacing diode with a short) it resolve the TMC issue, 
But will not alow SPI to work for the SPI in the EXP2 connector( SD card in a LCD) and the MAX31865 Circuit 
Placing a 1n4001 on this new wire patch resolve the issue with no drawaback. 
Not the most elegant solution , but it worked for me   

I believe This D41 diode is defective from factory

If this defect is comming from a bad batch (or wrong model) of diodes on the assembly line , Other than me could be affected