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Overide Second Bootloader

Lu CA over 11 years ago

Hello,

I'm trying to find out if I can overwrite the secondary bootloader. The main point is rewrite it to fix an annoying bug.

I wrote a "trojan horse" application which once installed on the flash of the NXP17xx try with iap to write sector 0 with the correct bootloader.

This seems to work, but after reset all is gone, no new bootloader or old one.

I know the iap cannot write the first 64bytes of sector 0, so i try to move VTOR from 0x0 ( SCB->VTOR = VTOR_OFFSET;), but still no good result.

Any idea?
thank you!