AT Commands problem FX30S

I Upgrade the Firmware for my FX30S, after this I can not sending AT command through serial port. all works fine with USB port.

do you have any idea?

Legato Ver: 19.11.2_625c7d1acfd1ca45b2dbe189b4cb1ce7
Yocto Ver: SWI9X06Y_02.35.02.00 2020-06-10_04:06:00
OS Ver: Linux version 3.18.140 (oe-user@oe-host) (gcc version 7.3.0 (GCC) ) #1 P
REEMPT Wed Jun 10 03:41:13 UTC 2020
LK Ver: SWI9X06Y_02.35.02.00
RootFS Ver: SWI9X06Y_02.35.02.00 2020-06-10_04:06:00
UserFS Ver: unknown
MCU Ver: 002.014


Seems you are not using FX30 FW:

I don’t see problem to use UART AT command port:
Manufacturer: Sierra Wireless, Incorporated
Model: WP7702
Revision: SWI9X06Y_02.22.12.00 eaf79c jenkins 2019/04/24 18:48:27
IMEI: 352653090002874
FSN: VU735370521401

+IPR: 115200

Legato Ver: 18.09.4.c964f253_3ba44b6732e03bacfafb714c4463754d
Yocto Ver: SWI9X06Y_02.22.04.00 2020-06-18_02:43:58
OS Ver: Linux version 3.18.44 (jenkins@CAKEL-EV-ALBLD2) (gcc version 6.2.0 (GCC) ) #2 PREEMPT Thu Jun 18 02:45:08 UTC 2020
LK Ver: 1.3.0_da731a7332
RootFS Ver: SWI9X06Y_02.22.04.00 2020-06-18_02:43:58
UserFS Ver: unknown
MCU Ver: 002.011

!MAPUART: 1,16


I’am using this link:

which firmware should I choose?

Manufacturer: Sierra Wireless, Incorporated
Model: FX30S(WP7702)
Revision: SWI9X06Y_02.35.02.00 5208b3 jenkins 2020/06/10 00:30:12
IMEI: 354723090173138
FSN: VU030386390110

your link is for standalone WP77 module.
For FX30 with WP77 inside, you can use this:

this is the link you provided me previously for the FX30S

Ok I will use the new link, but will I use Firmware for ATT or other?


It depends on your network carrier.
If it is not ATT or verizon, you can use generic one.

Please note that you can still use WP77 FW, as inside your FX30, it is still a WP77 module.
But people will prefer to use FX30 FW for FX30 device as it contains extra feature.

I found this procedure

I am no expert! Can you give me more details (or a more detailed tutorial) explaining how to use SSH to run FW.


you can use teraterm to open SSH on
For transferring the CWE file, you can use WINSCP tool

Is there a password?

I don’t know if you set it before, i just use “root” for username


I still can’t seem to fix the problem, I’m not used to using these tools. is it possible that i give you Teamviewer access to my computer so that you can see with me to update the firmware? if so, we can make an appointment.

What is the problem now?
Can you ping from your PC?

Yes I can ping

He ask me a password!


I don’t know the password of your device…

Another unofficial way to update module FW is as follows:

  1. download a WP77 FW EXE
  2. use 7zip to extract it
  3. there should be a fdt2.exe inside
  4. put the new xxx.cwe inside the same folder
  5. use command prompt to update by “fdt2.exe xxx.cwe”

Seems works! can you confirm that all seems good:

Seems the same as mine, you can check the version in release note