Mbed-os based Wi-SUN node problems

I ultilised NUCLEO_F429ZI+X-NUCLEO-S2868A2 flashed nanostack-border-router firmware as Wi-SUN BR,meanwhile NUCLEO_F429ZI+X-NUCLEO-S2868A2(S2-LP) flashed mbed-os-example-mesh-minimal firmware as Wi-SUN R.Of course on BR and R,I have both moved 0Ω resisance from CN9 R11(arduino D3)->CN5 R6(arduino D13)on X-NUCLEO-S2868A2 daughterboard.Except that,on BR,I also have moved 0Ω resisance from SB121 PA7->SB122 PB5 on NUCLEO-F429ZI motherboard.At hte same time,I have modified both on nanostack-border-router\mbed_app.json and nanostack-border-router\configs\Wisun_Stm_s2lp_RF.json as the link https://os.mbed.com/teams/ST/wiki/Nucleo-144pins-ethernet-spi-conflict said:

But BR still warned error “[ERR ][STE1]: HAL_ETH_Init issue”,

R cannot connect S2-LP PHY.
What is the wrong?