RC7620-1 not available after update with "qmi-update-firmware"

IoT Modules RC76
1

Hello,

after updating an RC7620-1 with the latest firmware, the modem loops on the USB connect/disconnect part. I think it keeps rebooting.
What is the method for recovering the modem?

Thank you for your help.

usb 1-1.1: new high-speed USB device number 113 using ci_hdrc
usb 1-1.1: config 1 has an invalid interface number: 8 but max is 3
usb 1-1.1: config 1 has no interface number 1
usb 1-1.1: New USB device found, idVendor=1199, idProduct=68c0
usb 1-1.1: New USB device strings: Mfr=3, Product=2, SerialNumber=4
usb 1-1.1: Product: Sierra Wireless RC7620-1
usb 1-1.1: Manufacturer: Sierra Wireless, Incorporated
usb 1-1.1: SerialNumber: 7T2473515007A120
qcserial 1-1.1:1.0: Qualcomm USB modem converter detected
usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB0
qcserial 1-1.1:1.2: Qualcomm USB modem converter detected
usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB1
qcserial 1-1.1:1.3: Qualcomm USB modem converter detected
usb 1-1.1: Qualcomm USB modem converter now attached to ttyUSB2
qmi_wwan 1-1.1:1.8: cdc-wdm0: USB WDM device
qmi_wwan 1-1.1:1.8 wwan0: register ‘qmi_wwan’ at usb-ci_hdrc.1-1.1, WWAN/QMI dev
ice, ee:0a:1e:50:28:98
usb 1-1.1: USB disconnect, device number 113
qcserial ttyUSB0: Qualcomm USB modem converter now disconnected from ttyUSB0
qcserial 1-1.1:1.0: device disconnected
qcserial ttyUSB1: Qualcomm USB modem converter now disconnected from ttyUSB1
qcserial 1-1.1:1.2: device disconnected
qcserial ttyUSB2: Qualcomm USB modem converter now disconnected from ttyUSB2
qcserial 1-1.1:1.3: device disconnected
qmi_wwan 1-1.1:1.8 wwan0: unregister ‘qmi_wwan’ usb-ci_hdrc.1-1.1, WWAN/QMI devi
ce

2

have you tried to trigger the TP1 (pin 47) to download mode and download some FW again?

image
image1148×663 88.3 KB

For example: 
jordan@jordan-X240:~/QMI/MBPL/MBPL_SDK_R28_ENG5-fwdwl.bin/SampleApps/lite-fw-download$ sudo ./bin/fwdwl-litehostx86_64 -c QMI  -m 4 -d /dev/ttyUSB0 -f /home/jordan/Downloads/FW_EM74x1/SWI9X50C_01.14.03.00_GENERIC_002.036_010/
3

Thank you for your reply.
I will check with the hardware people to order this pin and use “fwdwl-litearm” in your order as my target is ARM 32 Bits.
But in your order I don’t see the name of the update file. It is the file “RC76xx_Release9.6.1_GENERIC_7620.spk”.

4

My example is just for EM module
You can change the filename

5

Here’s the result of the recommended manipulation: :unamused:

image
image811×244 4.65 KB

What does this error mean?
How can I correct it?
Thank you for your help.

6

does same procedure work in anther OK module?
This is to ensure the recovery method is OK for all module triggering TP1 boot pin.

7

I think I’ve figured out the problem thanks to the fwdwl.log file:
the qmi_wwan, qcserial and usb_wwan drivers are built into the Linux kernel, whereas you need to use modules.
I’m going to change that.