flashing problem

upswing

I am having a problem flashing the feather.

I set up the project file with
Enable Zephyr application to be booted by MCUboot
CONFIG_BOOTLOADER_MCUBOOT=y

After putting the board in DFU mode I type the following command

newtmgr -c serial6 image upload build/zephyr/app_update.bin
0 B / 169.01 KiB [——————————————————————————————-] 0.00%Error: NMP timeout
PS C:\nfed\nrf\applications\serial_lte_modem>

PS C:\nfed\nrf\applications\serial_lte_modem> newtmgr conn show
Connection profiles:
serial: type=serial, connstring=‘dev=COM5,baud=1000000’
serial1: type=serial, connstring=‘COM6’
serial6: type=serial, connstring=‘dev=COM6,baud=1000000’
PS C:\nfed\nrf\applications\serial_lte_modem>

app_update.bin is 170K

The device uses COM6.. Is the baud rate setup correctly?

How can I check that the device is in DFU mode? Is there a Led that indicates that the board is in the programming mode?

jaredwolff

upswing the easiest way to know if it’s ready to take an update is when the blue LED is illuminated. Anything above _192kB won’t flash but it looks like you’re within the limit. Your baud rate looks ok too. More details on flashing are here.