= is long pulse, * is short pulse:

= USB flashing done

** RST is not connected

*= CMD is not connected

=* D0 is not connected

== CLK is not connected

*** No eMMC CMD1 responce (bad eMMC?)

**= No eMMC block 1 read (should not happen)

*=* No eMMC block 0 read (eMMC init failure?)

*== No eMMC CMD1 request (poor wiring, or dead CPU)

=** eMMC init failure during glitch process

=*= CPU never reach BCT check, should not happen

==* CPU always reach BCT check (no glitch reaction, check mosfet)

=== Glitch attempt limit reached, cannot glitch

=*** eMMC init failure

=**= eMMC write failure - comparison failed

=*=* eMMC write failure - write failed

=*== eMMC test failure - read failed

==** eMMC read failed during firmware update

==*= BCT copy failed - write failure

===* BCT copy failed - comparison failure

==== BCT copy failed - read failure