unipi ~ $ dmesg | grep UNIPISPI
[ 2.454608] UNIPISPI: UniPi Board B_1000 (L:0 U:0 C:0) at CS0 (nspi0 12000kHz) detected.
[ 2.467983] UNIPISPI: 16 User LEDs detected at nspi0
[ 2.475954] UNIPISPI: UniPi Board E_16Di_U_14Ro (L:3 U:2 C:8) at CS1 (nspi1 12000kHz) detected.
[ 2.495803] UNIPISPI: Probe did not detect a valid UniPi device at CS2
[ 2.496119] UNIPISPI: SPI Driver Registered, Major Version: Version 1.34:2019:10:03
[ 2.496737] UNIPISPI: ModBus/SPI interface /dev/unipispi (245:0) created.
[ 158.661036] UNIPISPI spi0.0: SPI transfer failed: -110
[ 2148.754015] UNIPISPI spi0.1: SPI transfer failed: -110
[ 3297.270834] UNIPISPI spi0.1: SPI transfer failed: -110
[ 3618.798812] UNIPISPI spi0.1: SPI transfer failed: -110
[ 6489.035355] UNIPISPI spi0.1: SPI transfer failed: -110
[ 8414.343493] UNIPISPI spi0.0: SPI transfer failed: -110
[12400.512183] UNIPISPI spi0.1: SPI transfer failed: -110
[12481.452324] UNIPISPI spi0.0: SPI transfer failed: -110
[13153.014346] UNIPISPI spi0.1: SPI transfer failed: -110
[14039.157003] UNIPISPI spi0.0: SPI transfer failed: -110
[15105.415528] UNIPISPI spi0.0: SPI transfer failed: -110
[16545.011297] UNIPISPI spi0.1: SPI transfer failed: -110
[16546.771363] UNIPISPI spi0.1: SPI transfer failed: -110
[18041.752730] UNIPISPI spi0.1: SPI transfer failed: -110
[20890.498278] UNIPISPI spi0.1: SPI transfer failed: -110
[21524.030638] UNIPISPI spi0.1: SPI transfer failed: -110
[23903.903012] UNIPISPI spi0.1: SPI transfer failed: -110
[24528.342008] UNIPISPI spi0.0: SPI transfer failed: -110
[24859.480110] UNIPISPI spi0.0: SPI transfer failed: -110
unipi ~ $ fwspi -i 0
-bash: fwspi: command not found
unipi-common/stretch,now 1.2.12~stretch arm64 [installed,automatic]
unipi-firmware/stretch,stretch,stretch,now 5.40 all [installed]
unipi-firmware-tools/stretch,now 1.2.12~stretch arm64 [installed,automatic]
unipi-kernel-modules/stretch,now 1.34.1.20190926~stretch arm64 [installed,automatic]
unipi-mervis-tools/stretch,stretch,stretch,now 2.1.3.16~stretch all [installed]
unipi-modbus-tools/stretch,now 1.2.12~stretch arm64 [installed]