I wonder, if that's possible to load lpc3154 at LPCExpresso board with custom firmware?
I see that chip supports secure boot, so if AES key was programmed, it is impossible without knowing the key? Or are there any options to boot lpc3154 without knowing the key? (SD, flash, USB, JTAG… Anything?)
Does anyone know if key was indeed loaded?
Just buying new lpc3154 is not an option – they are not in stock here anywhere, and wait times are 4 weeks+ (and a price tag > than a price of this board)…
Best Answer
From what i gather the AES key is loaded into the chip. And also there may be a CR232 check on the firmware as well or OTP fuses set
source
This doesn't mean it cant be hacked, if you put the time into it. I would check to see if the JTAG pins have been disabled and start from there.
some interesting statements from the user guide
Edit: If the key is truly loaded, you will only be able to load custom firmware if you have the key.