It can happen to the best of us! I missed the ssl line in your example as well when typing it over. Great to hear it got solved

@naveen I paid EUR 2.90 for the return postage.

@kgunnar said in Where can I find the source code for the network/LTE?: Python layer available somewhere The C file for the Python API file is this one: https://github.com/pycom/pycom-micropython-sigfox/blob/master/esp32/mods/modlte.c It calls other functions of the LTE module. You'll find it if you follow the code.

@bqpd Thank you from the future.

Hi @stsiafak Just curious, were you able to send the data using non-IP mode? Also, how did you get the packet into wireshark?

@lewis +1 Question to lewis, who are you buying your SIM through? I understand the two choices are Twilio and AlwaysConnect. I have one from AlwaysConnect. Nice guys, but so far unhelpful since they don't deal with IoT devices, just CradlePoint products and not any of the microcontrollers such as PyCom and/or Particle, etc. Question to PyCom, I see where T-Mobile US says the only certified device from Sequans is the US130Q. How will that affect us on the FiPy platform? Is there action you, the vendor, need to take to ensure your IoT platforms are certified?

Hi @sh4nnongoh, Please check this post for updates about the modem upgrades. Hope this helps!

getting further on this problem found list of OSErrors ENOENT means No such file or directory there was a typo in the file path at this point i'm getting other errors at line 121 >>> sqnsupgrade.run('/sd/FIPY_GPY_NB1_37781.dup',921600) <<< Welcome to the SQN3330 firmware updater >>> Entering recovery mode Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/flash/lib/sqnsupgrade.py", line 121, in run TypeError: extra keyword arguments given >>> reading the sqnsupgrade.py says that the line does print('Resetting.', end='', flush=True) guessing it is not important that to print something i removed the line running the upgrade again gives me this >>> sqnsupgrade.run('/sd/FIPY_GPY_NB1_37781.dup',921600) <<< Welcome to the SQN3330 firmware updater >>> Entering recovery mode Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/flash/lib/sqnsupgrade.py", line 123, in run File "/flash/lib/sqnsupgrade.py", line 74, in wait_for_modem TypeError: extra keyword arguments given reading the code at that line 74 gives print('.', end='', flush=True) this makes me think that there is something wrong with the call of the print() function so i removed the flush=True from both lines. after running the sqnsupgrade i now get the following >>> sqnsupgrade.run('/sd/FIPY_GPY_NB1_37781.dup',921600) <<< Welcome to the SQN3330 firmware updater >>> Entering recovery mode Resetting.. Starting STP (DO NOT DISCONNECT POWER!!!) STP started Session opened: version 1, max transfer 8192 bytes Code download failed, aborting! >>> this is how far i am at he moment still looking in to this any help is appreciated edit: after some more trying got some more info if i try the update again i get this error >>> sqnsupgrade.run('/sd/FIPY_GPY_NB1_37781.dup',921600) <<< Welcome to the SQN3330 firmware updater >>> Entering recovery mode AT+SMSWBOOT=3,0 response b'' Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/flash/lib/sqnsupgrade.py", line 131, in run OSError: AT+SMSWBOOT=3,0 failed! the modem is not responsive to any AT commands if i send just AT+CGMI i get ERROR i tried to locate the cause of the error of the code download i eddited the sqnsupgrade.py to find out where this error is generated it is in line 155 except: blob.close() print('Code download failed 2, aborting!') abort = True i'm really out of ideas for the moment