LPC4357 bootloader dump

[pieroquark87]

Hi there,

I would like to know if is it possible to dump the bootloader flashed on the internal ROM of the LPC4357 tracing back to the corresponding bin file.

Many thanks in advance.

Giovanni

[Pavel_Hernandez]

Hello,

No, you can't put your own bootloader in the ROM, the ROM already has the definite bootloader and can't be erased before out of the factory.

If you want to use the customized bootloader, you should put it in front of the flash.

Best regards,
Pavel

[pieroquark87]

Hi, yes, sorry, I said that badly. I meant I've loaded onto the flash A memory a custom bootloader using the Ulink Pro. After that if, for example, I give the board to you, is there a way you can trace back to the corresponding bin file of the custom bootloader I've loaded?

[Pavel_Hernandez]

Hello, 

Yes, sure, but are you interested in locking the MCU? 

Best regards,
Pavel

[pieroquark87]

Hi, thanks for your reply. How do you make to trace back to the custom bootloader bin?

[Pavel_Hernandez]

Hello,

What do you mean with |trace back|? Is that for TRACE or Reverse engineering?

I meant I've loaded onto the flash A memory a custom bootloader using the Ulink Pro. After that if, for example, I give the board to you, is there a way you can trace back to the corresponding bin file of the custom bootloader I've loaded?

I think we have different understanding could you please elaborate further?

If you want to use a secure bootloader I think this app note maybe could help you.
[Secure Bootloader implementation (nxp.com)] [Firmware Update Using Secondary Bootloader (nxp.com)]

Best regards,
Pavel