What version the picofy fw you use?For the first time with me, a device with nand skhynix did not work with the 100/100/47 ohm resistor configuration. When trying the device several times I found the error "=***" emmc int failure. Upon checking all the points, I realized that the measurements were correct. I decided to replace the 100ohm resistor on the CMD line with a 47ohm one and the problem was solved.