We have a custom board with MIMXRT1062DVJ6B and used bootloader chip from a teensy 4.1 dev board. The bootloader is now blinking twice. We have double checked the MKL02 and IMXRT1062 connection, and pretty confident that solder is good. When its is connected to the PC it make peripheral connect sound.
I have checked the powerup sequence and its same as mentioned on the website.
Here is the schematic of the custom board.
I have checked the powerup sequence and its same as mentioned on the website.
Here is the schematic of the custom board.