# AWS IoT ExpressLink SARA-R5 Starter Kit V2 Connections registrations issues **URL:** \ **Category:** Cellular\ **Created:** [July 4, 2023, 1:45pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866 "2023-07-04T13:45:03Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![RoIkana](https://avatars.discourse-cdn.com/v4/letter/r/8e7dd6/32.png) [@RoIkana](https://community.sparkfun.com/u/RoIkana)\ **Post date:** [July 4, 2023, 1:45pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/1 "2023-07-04T13:45:03Z")
Hello, I’m trying to follow the official documentation [https://content.u-blox.com/sites/defaul … 042016.pdf](https://content.u-blox.com/sites/default/files/SARA-R5-AWS-IoT-ExpressLink-development-guide_AppNote_UBX-21042016.pdf) when registering for AWS. - I don’t see the message “Welcome to u-blox AWS IoT ExpressLink SARA-R5” - I do see the message “OK” when doing the “AT” command - When executing the command “AT+CONF [EndPoint=xxxxxxx-ats.iot.us-east-1.amazonaws.com](http://EndPoint=xxxxxxx-ats.iot.us-east-1.amazonaws.com)” I get “ERR11 UNKNOWN KEY” I’m using an m1 MacBook air and coolterm to connect this is my configuration. ![Untitled.jpg](https://canada1.discourse-cdn.com/sparkfun/original/3X/d/d/dd7aa00b9c3036853458391725233235197655cb.jpeg) ---
**Author:** ![fpintellegre](https://avatars.discourse-cdn.com/v4/letter/f/3be4f8/32.png) [@fpintellegre](https://community.sparkfun.com/u/fpintellegre)\ **Post date:** [July 11, 2023, 3:22am UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/2 "2023-07-11T03:22:44Z")
We are facing the same issue. ---
**Author:** ![TS-John](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-john/32/6093_2.png) [@TS-John](https://community.sparkfun.com/u/TS-John)\ **Post date:** [July 17, 2023, 11:27pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/3 "2023-07-17T23:27:02Z")
We will look into this issue soon and see what the problem is. I am not sure off the top of my head as the product should work as instructed via documentation. ---
**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\ **Post date:** [July 18, 2023, 6:06pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/4 "2023-07-18T18:06:09Z")
Try performing a factory reset [https://content.u-blox.com/sites/defaul … 042016.pdf](https://content.u-blox.com/sites/default/files/SARA-R5-AWS-IoT-ExpressLink-development-guide_AppNote_UBX-21042016.pdf) (page 18) and see if that helps - any luck? ---
**Author:** ![RoIkana](https://avatars.discourse-cdn.com/v4/letter/r/8e7dd6/32.png) [@RoIkana](https://community.sparkfun.com/u/RoIkana)\ **Post date:** [July 19, 2023, 1:22pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/5 "2023-07-19T13:22:34Z")
The factory reset apparently did work. Also instead of using CoolTerm I started using Pyserial for reproducibility: ```auto import serial import time # Replace with your COM port COM_PORT = '/dev/cu.usbserial-110' BAUD_RATE = 115200 def send_command(ser, command): ser.write((command + '\r\n').encode()) time.sleep(1) while ser.in_waiting: response = ser.readline().decode().strip() print(response) return response def main(): # Connect to the board ser = serial.Serial(COM_PORT, BAUD_RATE, timeout=1) print('Connected to the board') # Wait for the welcome message while not send_command(ser, 'AT'): time.sleep(1) # Configure the board # Replace with your actual commands response = send_command(ser, 'AT+FACTORY_RESET') print("Response from the board: ", response) # Close the connection ser.close() if __name__ == ' __main__': main() ``` Response: ```auto ❯ python3.11 reset.py Connected to the board OK OK Response from the board: OK ``` But before and after the reset with this script: ```auto import serial import time # Replace with your COM port COM_PORT = '/dev/cu.usbserial-110' BAUD_RATE = 115200 def send_command(ser, command): ser.write((command + '\r\n').encode()) time.sleep(1) while ser.in_waiting: response = ser.readline().decode().strip() print(response) return response def main(): # Connect to the board ser = serial.Serial(COM_PORT, BAUD_RATE, timeout=1) print('Connected to the board') # Wait for the welcome message while not send_command(ser, 'AT'): time.sleep(1) # Configure the board # Replace with your actual commands response = send_command(ser, 'AT+CONF EndPoint=xxxxxx-ats.iot.us-east-1.amazonaws.com') print("Response from the board: ", response) # Close the connection ser.close() if __name__ == ' __main__': main() ``` I get this error: ```auto ❯ python3.11 configure.py Connected to the board OK ERR11 UNKNOWN KEY Response from the board: ERR11 UNKNOWN KEY ``` Which is the same I was getting before. ---
**Author:** ![TS-Russell](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/ts-russell/32/6092_2.png) [@TS-Russell](https://community.sparkfun.com/u/TS-Russell)\ **Post date:** [July 19, 2023, 9:10pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/6 "2023-07-19T21:10:10Z")
Ok, now that the board is at least responding when hooked up, the error for an unknown key is usually a typo either in the key itself or the code that uses it - try using the AWS key elsewhere, or performing some other sandbox-style test…are the keys functional otherwise? ---
**Author:** ![RoIkana](https://avatars.discourse-cdn.com/v4/letter/r/8e7dd6/32.png) [@RoIkana](https://community.sparkfun.com/u/RoIkana)\ **Post date:** [July 19, 2023, 11:16pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/7 "2023-07-19T23:16:04Z")
Yes, I was able to move forward. The documentation is wrong; the error here([https://docs.aws.amazon.com/iot-express … lpg-table2](https://docs.aws.amazon.com/iot-expresslink/latest/programmersguide/elpg-configuration-dictionary.html#elpg-table2)) says: ```auto 5.1.1.5 ERR11 UNKNOWN KEY If the parameter name (key) is not found in Table 2 - Configuration dictionary persistent keys or Table 3 - Configuration dictionary non-persistent keys , then the module returns 'ERR11 UNKNOWN KEY'. ``` And on the table, the key is Endpoint on the docs is EndPoint. ---
**Author:** ![RoIkana](https://avatars.discourse-cdn.com/v4/letter/r/8e7dd6/32.png) [@RoIkana](https://community.sparkfun.com/u/RoIkana)\ **Post date:** [July 20, 2023, 2:28am UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/8 "2023-07-20T02:28:44Z")
Ok so I don’t know if the documentation is up to date I was able to advance when doing AT+CONF Endpoint= But now that I try to get the cert as per the doc I only get: ```auto AT+CONF? Certificate OK ``` But no cert text am I missing something? ---
**Author:** ![attep](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/attep/32/6401_2.png) [@attep](https://community.sparkfun.com/u/attep)\ **Post date:** [August 16, 2024, 8:04pm UTC](https://community.sparkfun.com/t/aws-iot-expresslink-sara-r5-starter-kit-v2-connections-registrations-issues/45866/9 "2024-08-16T20:04:40Z")
Having same issue, except: - I can see “OK” after “AT” (= my terminal settings seems correct) - “AT+FACTORY\_RESET” prompts “OK” and “Rebooting…” (it did not help) - if I write “AT+NONSENSE” I get “ERR3 COMMAND NOT FOUND” (=command line interpreting itself works) - only thing that is missing is this “Welcome to u-blox AWS IoT ExpressLink SARA-R5” in the beginning What could be wrong?