RC7620-1 firmware revision 10 does not install

IoT Modules RC76
1

We are having difficulty loading firmware on the RC7620-1 modems. The file we are attempting to load is ‘RC76xx_Release10_GENERIC_7620.spk’ and it was downloaded from the Sierra Wireless site: https://source.sierrawireless.com/resources/airprime/software/rc76xx/rc76xx-firmware-release-10,-d-,0/

We upload the firmware using the AT commands and the XMODEM-1K protocol. After the firmware is loaded onto the device, the installation commands return ‘Package installation result fails or status is unknown’. The relevant part of the log is:

<AT+WFWUPD?
>+WFWUPD: 1
>OK
<AT+WFWUPD=1
>OK
...time passes...
>+WFWUPD: 1

A closer inspection of the firmware file shows that it has EXACTLY the same hash as the firmware for the RC7611-1 which seems unusual, considering they are different hardware, and perhaps an error was made uploading the file.

> (Get-FileHash RC76xx_Release10_GENERIC_7620.spk).Hash
185E5F4AD06941F0507C529AEA92A4ADAEEDF2F3062B70EBDA4FBA0AA0C54DD9

> (Get-FileHash RC76xx_Release10_GENERIC_7611.spk).Hash
185E5F4AD06941F0507C529AEA92A4ADAEEDF2F3062B70EBDA4FBA0AA0C54DD9

Can you please provide a link to a valid RC7620-1 firmware release 10 for us to cross-check and load onto our devices?

2

I run the “RC76xx_Release10_GENERIC_7620.exe”, i can upgrade the RC7620-1 module.

3

Why do I get +WFWUPD: 1? How can I diagnose this issue and move on?

We can’t use the .exe because the module is embedded, and we must use the AT commands and the .spk file.

4

is it ok to do on .spk of FW R8?

5

We have done all our testing against R10 and would now like to deploy it to our devices.

I believe the link to the R10 spk is the wrong file. Comparing the firmware R9 between RC7611 and RC7620, the hash is different. It makes no sense for R10 they are exactly the same.

(Get-FileHash 'RC76xx_Release9_GENERIC_PTCRB_7611.spk').Hash
9CBD6F7D5775B0E82616D93D01E6354872A7AA72976462B97519B28E9BA41939
(Get-FileHash 'RC76xx_Release9_GENERIC_GCF_7620.spk').Hash
B17D517362740729FE7B99EDC059A6ABD04E845FF46D5436CB629E7A4DBF378C

Is there a way to extract the spk from the R10 exe?

6

i used 7zip in windows to extract the EXE

at+wfwupd=0
OK


+WDSI: 3

AT+WFWUPD=1
OK
at
OK

+KSUP: 2
ati3
Manufacturer: Sierra Wireless, Incorporated
Model: RC7620-1
Revision: SWI9X07H_00.09.10.00 85890e jenkins 2023/09/25 03:16:56
IMEI: 353635110212345
IMEI SV: 29
FSN: 7T118701512345
+GCAP: +CGSM

OK
at+wfwupd?
+WFWUPD: 0

OK