Whether can we update IMX8QM but not need Set the boot pin to serial download mode

[wang12zhe]

From the IMX_YOCTO_PROJECT_USERS_GUIDE.pdf, find need Set the boot pin to serial download mode mode first.

But whether can we update IMX8QM but not need Set the boot pin to serial download mode? 

[AldoG]

Hello,

It is recommended to set serial download mode when you're testing software, since the device will go to serial download directly so you may update software.

For production it is possible to set Boot mode fixed, be it by fuses or GPIO to the desired boot media (eMMC, SD, NAND, etc.), since boot media would be clean at first boot, the device will go to serial download so it is possible to flash the device.

Best regards,
Aldo.

[wang12zhe]

@AldoG 

Thanks very much

I had test it, but one question:

After clean the first boot by command and reboot the system by command reboot

then download image by uuu, it will not start download process

the process only start when Disconnect and reconnect power, am I right

[AldoG · Accepted solution]

Hi,

Yes your understanding is correct.

Best regards,
Aldo.