LPC1785 after set CRP level 2, how to re-invoke that using UART0/3 or SD card to upgrade firmware by IAP?

[lpcware]

Content originally posted in LPCWare by cwl on Wed Jan 30 19:38:33 MST 2013
hi,

By using LPC1785, we want to use either UART0/3 or SD card to upgrade binary file by IAP.

We have looked at the below example and app note but still have no idea how to fix our problems.
http://www.lpcware.com/content/nxpfile/an10851-crp-example-source-code

We have the below questions:
1) after set CRP level 2, how to re-invoke that we could upgrade binary file from UART0/3 by IAP?
2) after set CRP level 2, do you have any example codes that could upgrade binary file to flash by writing to SDRAM first and then writing back to the flash?
3) do you have any SD card interface library codes?

thanks!