Can you try the MBPL R20 again?
- in AT command port, enter AT!BOOTHOLD, after that only /dev/ttyUSB is seen
- run the following (-f should be specify the folder):
owner@ubuntu:~/QMI/MBPL_SDK_R20_ENG4-lite.src/SampleApps/lite-fw-download$ sudo ./bin/fwdwl-litehostx86_64 -m 4 -d /dev/ttyUSB0 -p /dev/cdc-wdm0 -t 1 -f /home/owner/Desktop/RC7620_FW/
Application version: 1.0.2105.3
INFO: QDL Port : /dev/ttyUSB0
INFO: Device Path: /dev/cdc-wdm0
INFO: FW Path : /home/owner/Desktop/RC7620_FW/
Target image Info:
Carrier :GENERIC
FW Version :00.08.07.00
Model ID :SWI9X07H
Package ID :000
PRI Version:001.081
SKU :9999999
Modem is in QDL mode. Continuing FW download
Waiting for modem to come up in BOOT and HOLD mode …
BOOT and HOLD Mode. Downloading firmware …
Downloading: /home/owner/Desktop/RC7620_FW//RC76xx_Release8_GENERIC_GCF_7620.spk
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