External memory for FX30

Is there any way to install and use an external memory on the FX30 series?
I have found a post from 2008 and I thought to double check the answer is still NO.
Reason is that the unit will travel in areas without proper Cell coverage, and so we would like to store information to be sent back to the server once the signal is received back.

There is SDIO pin in IoT Expansion Card, you might consider to connect SD Card.

do you have information about that?
examples or apps to access that memory area?
Using an SD card is exactly what we are looking at

The user guide says there is SDIO pin for /dev/mmcblk0.
also the USB pin on the IoT Expansion Card should also be able to connect USB thumb drive

You might also consider connecting USB OTG cable to USB2.0 micro-B connector so that you can also connect USB thumb drive.
You can have a look on this, we did this on mangoh board before:

We have a USB memory with a micro-USB connection, so we would not need the USB OTG cable in between.
When I connect to the target I see that the dev is not enumerated, I also see that the post you have shared did refer to a problem with firmware version.
Do we know if the USB will work on the FX30 which is wp77?

I remember when i tested on WP76 with USB thumb drive connected to the micro-USB connector, I must use USB OTG cable.

I did try with the USB OTG cable as well and the the command returns 0 instead of 1:
cat /sys/bus/platform/drivers/msm_otg/78d9000.usb/power_supply/usb/usb_otg 0

Have you tried sd card then?

nope, it doesn`t seem there is any slot for a sd card inside the FX30

Seems need to use SDIO pin in IoT Expansion Card

Also I tried on mangoh green board to connect and disconnect OTG cable:

root@fx30:~# cm info
Device: WP7702
IMEI: 352653090002874
IMEISV: 4
FSN: VU735370521401
Firmware Version: SWI9X06Y_02.32.02.00 c2e98c jenki[ 903.933260] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:2) mode:FIFO slv_addr:0x3a MSTR_STS:0x0c1300c8 OPER:0x00000090
ns 2019/08/30 07:28:21
Bootloader Version: SWI9X06Y_[ 903.950860] i2c-msm-v2 78b8000.i2c: NACK: slave not responding, ensure its powered: msgs(n:1 cur:0 tx) bc(rx:0 tx:2) mode:FIFO slv_addr:0x3a MSTR_STS:0x0c1300c8 OPER:0x00000090
02.32.02.00 c2e98c jenkins 2019/08/30 07:28:21
MCU Version: 002.013
PRI Part Number (PN): 9907365
PRI Revision: 001.001
Carrier PRI Name: GENERIC
Carrier PRI Revision: 001.055_000
SKU: 1103530
Last Reset Cause: Power Down
Resets Count: Expected: 860 Unexpected: 257
root@fx30:~#
root@fx30:~# cat /sys/bus/platform/drivers/msm_otg/78d9000.usb/power_supply/usb/
usb_otg
1
root@fx30:~#
root@fx30:~# cat /sys/bus/platform/drivers/msm_otg/78d9000.usb/power_supply/usb/
usb_otg
0
root@fx30:~#

with the FX30, the latest stock firmware is FX30_WP77xx_full_R11.0.0.007-sierra-SWI9X06Y_02.22.12.00.cwe

you can also download WP77 Fw to it

I have been told that only the stock firmware meant for the FX30 should be used on this target.

of course for mass production, you should use the official FW for FX30.

Downloading WP77 FW is just for testing only, you can go back to FX30 FW after that.