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how to update trust firmware?

china liu
Note: This was originally posted on 28th May 2013 at http://forums.arm.com

hi, experts:

In a Cortex-A9 dual core(included TRUST Zone support) platform, how to update its trust firmware?
Its original boot procedure is:

iROM code --> Trust Firmware(located at NAND Flash chip) --> Uboot(a normal boot loader, also located at NAND Flash chip) --> Android OS.



Usually, Android's recovery mechanism will cover the Uboot's update.

So, how about Trust firmware? also used Android's recovery mechanism?



best wishes,