I bought a LPC55S69-evk(Rev A2) but it cannot be flashed by onboard link2 with Jlink firmware.
The setting was working for my Rev A1 board.
If I use CMSIS-DAP firmware for the onboard Link2, it works properly.
If I use jlink OB firmware for the onboard Link2, it can attach debugger to the board, but it cannot erase or program the chip.
I am using NXP Mcuxpresso.