jtag> detect
IR length: 8
Chain length: 1
Device Id: 00010100011100010010000101111111
  Manufacturer: Broadcom
  Part:         BCM4712
Cannot open /usr/local/share/jtag/broadcom/bcm4712/STEPPINGS
  Unknown stepping!
chain.c(110) Part 0 without active instruction
chain.c(133) Part 0 without active instruction
chain.c(110) Part 0 without active instruction