
During firmware upgrade, battery is drained out suddenly then....the lovely Nikon Coolpix 3200 is no longer turn on again, this was a long story about in March of 2008.
What to do, set this brick apart to look at what is fun to deal with, more or less, disorder those screws, flex cables and so on, except to the known of something about compact design, IC part number, nothing could be done.
In this May of 2009, someone send me an ACTEL chip and looking for the secreat inside the chip. Quickly reviewed the data sheet of which is available at the manufacturer website, and also further reading some application note & product leaflet, of course, it is not easy but possible only after enough investment both for hardware and time, it may say 100 years, who knows.
Up on such event and it triggered myself wanna to know the specific detail of JTAG, yes, JTAG, long enough heard that since 2002 as reading paper of Motorola MCU, what else since then? nothing because I am not the professional.