Error Boot recover RAK11720

[and-tecnipak (Andrés Ezequiel Núñez Donoso)]

i try flash recovery my rak11720, but give me that error, i try the official guide

1. swo in vcc
2. RST in gnd
3. connect energy
4. select com10
5. select programer Ambiq SBL
6. select burn bootloader
7. Reset RAK

help me plis!

Connecting with Corvette over serial port COM10…
RESET RAK11720 BOARD!!!
Sending Hello.
Received response for Hello
Received Unknown Message
msgType = 0x3332
Length = 0xa0d
[‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0xd’, ‘0xa’, ‘0x32’, ‘0x33’, ‘0xd’, ‘0xa’]
Traceback (most recent call last):
File “uart_wired_update.py”, line 353, in
!!!Wired Upgrade Unsuccessful!!!..Terminating the script
File “uart_wired_update.py”, line 42, in main
File “uart_wired_update.py”, line 185, in connect_device
NameError: name ‘exit’ is not defined
[6080] Failed to execute script ‘uart_wired_update’ due to unhandled exception!
Failed to burn bootloader: uploading error: exit status 1

[and-tecnipak (Andrés Ezequiel Núñez Donoso)]

i try enter the boot mode but not entry

i use the RAK defective and not entry boot mode, i put SWO pin in vdd and rst en gnd, not entry

also i try with RAK11720 in good state entry the boot mode and neither works

help me plis

[sercan (Sercan ERAT)]

@and-tecnipak

RESET RAK11720 BOARD!!!

Hello Andres,

Are you reseting your board (clicking reset button) when you see “RESET RAK11720 BOARD!!!” message?

Thanks.

[and-tecnipak (Andrés Ezequiel Núñez Donoso)]

yes, i do clicking reset button

[sercan (Sercan ERAT)]

I checked it on my side with Arduino IDE. These are steps that I am following.

1. Power up my RAK5005-O base board.
2. Set BOOT pin to VDD
3. Open Arduino IDE and go to ‘Tools’ and click ‘Burn Bootloader’
4. When I see ‘RESET RAK11720 BOARD!!!’, I am clicking reset button.

After that, I am getting following output and I am able to update it.

Now, the BOOT pin is released and I reset the board. I see following output on terminal.

Can you please share what are you seeing on your terminal? Also, please also try to send ‘AT+BOOT\r\n’ command after clicking reset pin (without setting BOOT pin to VDD/HIGH). Again, you must see “BOOT MODE” message.

By the way, please init reset pin like this:

Thanks.
Sercan.