Please help me after upgraded my 4G lte modem from 9001 to 9011 I’m not able to make calls and run internet simultaneously, if I trying to run modem manager for calls internet goes down and visa-versa, and while making calls the application drops the call in system but runs in background, i tried to find a way to downgrade to 9001 but not able to find the firmware file from anywhere.
If someone knows how to solve this problem please help me out
Welp, sorry you got fooled into thinking the 9011 firmware is an “upgrade”. 9001 user here, and my modem’s running perfectly fine.
If Clockwork’s Github is to be believed in, there’s no going back to the previous firmware without risk of bricking the module.
Also, it’s kind of normal for your LTE connection to drop when using cellular for calls. For you to use cellular for both calls and data at the same time, your calls need to be on what’s known as voice over LTE (VoLTE). Your OS, modem, and cellular network must support VoLTE before you can take advantage of that.
Nevertheless, first off, search is your best tool in this forum. Use it.
How did you make phone calls ?
using AT commands or modem manager?
I’ve tested the 4G modem with 9011
I made calls by
echo -en "ATD1301234567;\r\n" | sudo socat - /dev/ttyUSB2,crnl
1301234567 is just my example phone number.
and while calling , I do can still open browser to watch videos and the ping tests worked ,too
ping -I usb0 8.8.8.8
I also checked the output of ifconfig
normally I have an usb0 and a ppp0 both in ifconfig
mmcli can see the 4G modem ,too
when I hung the call ,there is a chance internet got issue, I found out that the 4G modem and Network manager will clear the /etc/resolv.conf for a little short while ,normally you won’t notice this.
After this short while , /etc/resolv.conf got nameserver back again, everything goes well
I use
echo -en "AT+CHUP\r\n" | sudo socat - /dev/ttyUSB2,crnl
echo -en "ATH\r\n" | sudo socat - /dev/ttyUSB2,crnl
to hung calls
I hope this can be helpful
Best regards
I installed GNOME Calls from Flatpak which make it easier for me to make calls all I have to do is enabled the modem(uconsole-4g-cm4 enable) and that’s it.
Now when I enable my modem it’s shows the internet via ethernet usb0 but GNOME calls shows no Voip is modem is available, and when I start the modem managar for calls then internet goes down.
How about open a terminal
when you got internet via usb0
try use
echo -en "ATD1301234567;\r\n" | sudo socat - /dev/ttyUSB2,crnl
replace 1301234567 with your real target number
for testing to see if it is true that your 4G modem can not have internet and calling simultaneously
Yes I tried this AT command to my target number but nothing happens I recieve no call on my mobile and also tried to call from my number to the SIM number in the modem and, used the AT command to answer the call as mentioned in this link How to make phone call send sms with 4G extension · clockworkpi/uConsole Wiki · GitHub
The call instantly drop after picking up.
Hy @guu @mterencelao, few weeks ago I emailed SIMCOM technical support team and explained my issue, yesterday I got the reply with stock firmware files.
Here is the link
Will it work to make my modem go 9001?
After my tests
It seems worked
I did downgrade to 9001 from a 9011 board (same one I tested before ,upgraded to 9011)
just copy fastboot, flash.sh from https://github.com/clockworkpi/uConsole/raw/master/Bin/4G/LE20B04SIM7600G22_cpi_arm64.tar.gz
to your LE20B06SIM7600G22
then with very similar process
echo -en "AT+BOOTLDR\r\n" |sudo socat - /dev/ttyUSB3,crnl
send the command AT+BOOTLDR to /dev/ttyUSB3 to put the device into bootloader mode.
then
sudo ./fastboot/bin/fastboot devices #check if there is the fastboot device
Now Flash it
./flash.sh
After flashing, the 4G module device ID auto became 9001 again (lsusb )
usb0 no more
It seems like a total 9001
but I am not sure if this can handle your (@chetan-baghel ) problem since My 4G module can always work with calling and internet simultaneously
Hy @guu THANKYOU SO MUCH BRO!!!
IT WORKED, DOWNGRADED TO 9001 AND WORKING PERFECTLY FINE LIKE BEFORE, I WAS SO HOPELESS after reading all the questions in this fourm.
Thankyou So much again 
Good to know ！
And I also thank you(@chetan-baghel ) very much for letting me to know it is possible downgrade the 9011
back at that time, We couldn’t get this firmware from the manufacturer (not SIMCOM )
Now I can add a new wiki to explain how to downgrade.
Best wishes
I wonder, what currently is the recommended firmware version to have VoLTE calls? Since the one that the uConsole ships with doesn’t seem to work, and the 9011 one seems to have internet issues: Calls use GSM not VoLTE with German carriers - potentially big problem? - #3 by ell1e
It would likely be helpful to users if there was some definite guide on this, perhaps even pinned in the forum and/or added to the Github wiki pages.
Hardly to say that
In my case, no matter 9011 or 9001 , I have both working with calls and internet simultaneously
just regular calling, I am not sure if it is the VoLTE calls
It seems like 9011 may just be incompatible with new kernels due to rndis removal. I’ve also noticed that the wiki upgrade page lists a lower number in the filename than the downgrade filename, is that intentional? How to upgrade 4G extension firmware · clockworkpi/uConsole Wiki · GitHub (Filename here contains 04) How to downgrade 4G extension firmware · clockworkpi/uConsole Wiki · GitHub (Filename here contains 06)
Well, it is not intentional, I‘ve noticed that until you mentioned it
I just got the firmware and uploaded , never thinked about the filename pattern