FW upgrade on RC7611 with 'fwdwl-litearm64linaro'

IoT Modules RC76
1

I am trying to upgrade FW on my RC7611, that is embedded into my device. I got the latest tool from
https://source.sierrawireless.com/resources/airprime/software/mbpl/mbpl-software-latest/#sthash.01lSGUdd.dpbs

My device information is as follows:
$ uname -r
5.4.160-xxxxx-devel
$ uname -m
aarch64

Without including any MBPL drivers, I am able to communicate with the modem smoothly without any issues. I am able to upgrade FW also with qmi-firmware-update tool without any problem.
But I have not been successful with ‘fwdwl-litearm64linaro’. I need to get this to work, as qmi-firmware-update doesn’t support downloading .nvu and .cwe files seperately. It accepts only .spk files.

I have 5.4 kernel. Do I still need to override these with MBPL drivers?
Also, I use only QMI mode. I don’t use PCIe mode or MBIM modes.

Here is what I did:

  1. Put the modem to boot&hold mode with AT!BOOTHOLD
  2. Issue the command:
    ./fwdwl-litearm64linaro -f “./” -m 4 -d /dev/ttyUSB0 -p /dev/cdc-wdm0

But nothing much happens… it just freezes here…

$ ./fwdwl-litearm64linaro -f “./” -m 4 -d /dev/ttyUS
B0 -p /dev/cdc-wdm0
Application version: 1.0.2207.1
ps: invalid option – ‘e’
BusyBox v1.35.0 () multi-call binary.

Usage: ps

Show list of processes

w	Wide output
l	Long output
T	Show threads

Please advise way forward.

2

Why was there "BusyBox v1.35.0 () "?

3

aha! good catch. Its coming from our firmware, which is trying to install something that is probably required by fwdwl tool. We don’t support ‘ps -e’ and that seems to be needed. When we added the support, it worked butter smooth! :slight_smile:

The same command installed all of the NVUs and CWE at one-go as expected.

Thanks a lot