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[GH-ISSUE #4] EM12-G QMI mode enabled but QMI services not responding (MSFT firmware) #3
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Originally created by @dslabakov on GitHub (Dec 31, 2025).
Original GitHub issue: https://github.com/4IceG/EM12-G/issues/4
Hi,
I am using a Quectel EM12-G (LTE Cat12) module on Ubuntu Linux.
The module runs firmware EM12GPAR01A08M4G_MSFT.
MBIM mode works correctly.
I can also switch to QMI mode using:
AT+QCFG="usbnet",0
After switching:
However, all QMI tools (qmicli, uqmi) time out.
No QMI services (DMS/NAS/WDS/UIM) respond at all.
It looks like QMI USB composition is enabled, but QMI services inside
the firmware are not initialized or disabled (MSFT firmware).
My questions:
or is it better to move to another module (e.g. EG12-GT / EP06)
for reliable QMI on Linux?
Any advice would be greatly appreciated.
Thanks!
@4IceG commented on GitHub (Dec 31, 2025):
Hi,
Yes, I saw modem working at QMI. I used this modem at QMI for many months, but I had a revision with Quectel FW.
Your modem has been modified by a hardware manufacturer/supplier, as indicated by the _MSFT marking in the firmware (it looks to me like a modem modified by Microsoft?). I don't know how much has been changed in firmware and what has been changed, but due to these changes, the modem may work differently than Quectel modems.
I don't know if it's possible to flash other firmware onto this modem, as Quectel's software does not recognize other modem revisions. Look for older 5G modems (they are already available at affordable prices). There is no point in buying EM12-G / EP06 now, as even without 5G, the modem will aggregate LTE bands and you will get better speeds through band aggregation in LTE-A.
@mgraupner commented on GitHub (Jan 17, 2026):
@dslabakov As I'm interested in this kind of modem too: Did you make any progress using this card?
@4IceG I would like to use this modem in a Mikrotik Router, not all modems are compatible and the EM12-G is the most affordable on Aliexpress, especially these MSFT ones.
@dslabakov commented on GitHub (Jan 17, 2026):
Hi, I suggest to avoid MSFT, it behaves strangely, but I was able to get normal EM-12 from alibaba supplier, just ask explicitly that you need version without MSFT