GPy Modem (NB1) Firmware Update

[nadvorvo]

Hi everyone,
I am following tutorial:
https://docs.pycom.io/tutorials/lte/firmware/

I have used this FAT file system on SD:
Format your SD card as with the FAT file system and then copy the files onto the card using your computer

>>> from machine import SD
>>> sd = SD()
>>> os.mount(sd, '/sd')
>>> os.listdir('/sd')
['n\x03', '\x12\x13\x02"P#\x04@."']
>>> import sqnsupgrade
>>> sqnsupgrade.run('/sd/NB1-41019.dup', '/sd/updater.elf')
<<< Welcome to the SQN3330 firmware updater [1.2.6] >>>
>>> GPy with firmware version 1.20.2.r3
Exception when checking file /sd/updater.elf... wrong file name?
[Errno 2] ENOENT
False

It seems files can not be read from sd.

>>> import sys
>>> sys.version
'3.4.0'
>>> sys.platform
'GPy'

Thank you in advance for your assistance.
Regards, Vojtech

[robert-hh]

@nadvorvo Good that it worked. The SD card support of these littel boards is a little bit picky. If you have a SD card that works well, keep it for that purpose. I personally have good experience with Sandisk cards.
I do not believe the the fail on the first attempt was related to the SD card. The error message originates from the modem firmware.

[nadvorvo]

@robert-hh @kjm Thanks a lot for writing back.
The problem was really in SD, I have taken another one (16GB Kingstone) and file listing is fine.

>>> from machine import SD
>>> sd = SD()
>>> fs = os.mkfat(sd)
>>> os.mount(sd, '/sd')
>>> os.listdir('/sd')
['System Volume Information', 'updater.elf', 'NB1-41019.dup']

Upgrade procedure started, but there is another problem (Code download failed[1], aborting!)

>>> import sqnsupgrade
>>> sqnsupgrade.run('/sd/NB1-41019.dup', '/sd/updater.elf')
<<< Welcome to the SQN3330 firmware updater [1.2.6] >>>
>>> GPy with firmware version 1.20.2.r3
/sd/updater.elf is not required. Resumining normal upgrade.
Firmware file is too big to load via FFF method. Using ON_THE_FLY
Attempting AT wakeup...
Session opened: version 1, max transfer 8192 bytes
Sending 5835531 bytes: [                                        ]   1%Wrong SRSP signature: 0x0D0A4552
SRSP header too small: 9
Code download failed[1], aborting!
True
>>>

I am trying another SD (32GB Scandisk Extreme) ... succeeded

>>> sqnsupgrade.run('/sd/NB1-41019.dup', '/sd/updater.elf')
<<< Welcome to the SQN3330 firmware updater [1.2.6] >>>
>>> GPy with firmware version 1.20.2.r3
Attempting AT auto-negotiation...
Session opened: version 1, max transfer 2048 bytes
Sending 371307 bytes: [########################################] 100%
Waiting for updater to load...
Attempting AT wakeup...
Session opened: version 1, max transfer 8192 bytes
Sending 5835531 bytes: [########################################] 100%
Waiting for modem to finish the update...
<<<=== DO NOT DISCONNECT POWER ===>>>
Resetting....................................
Your modem has been successfully updated.
Here is the current firmware version:

UE6.0.0.0
LR6.0.0.0-41019

IMEI: 354347095120116
True

[robert-hh]

@nadvorvo If you have the option, try a different SD card of moderate size, like 8 or 16 BGByte. Remove all partitions using a partition manager and create a new one.

[nadvorvo]

@robert-hh @kjm Thanks a lot for writing back.

RE: pins used to drive the sd card .... I am using expansion board V3.1 (no other devices connected, only GPy and ExpansionBoard)

RE: I don't see the fs=os.mkfat(sd) cmd ... I made a new test. Still not working.

>>> from machine import SD
>>> sd = SD()
>>> fs = os.mkfat(sd)
>>> os.mount(sd, '/sd')
>>> os.listdir('/sd')
['n\x03', '\x12\x13\x02"P#\x04@."']

RE: SD card must have single FAT partition
I have single FAT partition

[robert-hh]

@nadvorvo The SD card must have single FAT partition. New SD cards sometimes have a different partition structure. If you cannot see the files with uos.listdir(), then the firmware update will not work.

[kjm]

Have you checked the 3 pins used to drive the sd card (P8:DAT0, P23:SCLK and P4:CMD) are otherwise unused on your board? Also I don't see the fs=os.mkfat(sd) cmd anywhere?