OK, it looks like now that the USB device cannot be exported as a mapped partition. Did you correctly shut down the device (long 8s press on the power button) before flashing the device wth the MALF removal kernel?

The device must be completely off, it will boot up after the flasher uploads the maintatance kernel to it.

If that does not work, there are alternate methods, you can boot the device up with MOSLO kernel or ubiboot-02 kernel and try to telnet into the device if the export still does ot work with those.