Flash successfull but couldn't enable modem - GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Retry: Invalid transition' #170
Replies: 2 comments
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Small update and difference after trying an older version of the firmware from 2022: Enable is successful this time, but connection times out: |
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For those interested I got it to work. Not very well (bad weather, small antenna, indoor) but approx. 10 Mbps download / 1 Mbps upload. Solution from my inquiry at SIERRA Wireless Forums https://forum.sierrawireless.com/t/em7455-not-connecting-registering-to-network/31348/16 1 The Solution was to "flash" the APN. Not sure it was stuck on an APN of a different operator (maybe OpenWRT "flashed" the APN into the modem during one of the previous attemps with the other SIM card in QMI/MBIM modem), but it would definitively ignore the correctly specified operator in the "APN" Field. The reboot the modem network stack And finally check the status ... Now it's registered |
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I could update the firmware after slightly modifying the script.
See #71 and
autoflash-7455.sh.txt
I also trying to force FCC Unlock, given what some other users reported and the general guide at https://modemmanager.org/docs/modemmanager/fcc-unlock/.
Firmware Version is the latest available today (02.38.00.00).
Flashing log (unfortunately I had to flash several times because I got stuck in this , so only the last flash is shown here):
lsusb -v(only relevant device shown)lsusb(only relevant device shown)usb-devices(only relevant device shown)Status of FCC Unlock
And
dmesg(only relevant device shown)Trying to enable modem
journalctl -xeu ModemManagerMore details on
journalctl -xeu ModemManageraftersystemctl restart ModemManager.modemmanager.log
I tried this (at least the enable modem part) on:
There just seems to be something missing and I cannot figure out what.
Any other idea ?
Could it also be a USB power issue ? 500mA maximum current (if reported correctly) at 5V is only 2.5W. Could this also be the cause of the issue ?
Not sure if this is normal, probably it's NOT:
And this is when I tried some AT commands on OpenWrt.
Seems like the device is stuck in low power mode:
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