Hello, I would like to update our 4G Modules. Could you please provide me with the latest firmware. Quectel EC20: Current version EC20AQAR02A03E2G 1 [Dec 10 2015 10:21:29] Thanks, János

@leon.bao It seems that I finally managed to successfully upgrade the firmware of the EC20 module! (Some further verification will be necessary, when I put it back into the router I intend to use it, but the upgrade process successfully completed.) What happened since the last time: I booted ove…

Hi, @Janos_Szigetvari It has been sent via email.

Thank you again! I am downloading it right now.

@leon.bao Sorry to bother you again, but I would need the Windows 10 (64-bit) drivers for EC20 too, because otherwise, the serial ports don’t show up, and without those I can’t do the upgrade. Thanks for your help so far!

Hi, @Janos_Szigetvari I have sent it via email,pls check

@leon.bao Thank you so much for your ongoing excellent support! I now have to fix some other things on the laptop where I’m planning to execute firmware upgrade. I will come back if I need anything else or have any other question.

@leon.bao I’ve got quite an andventure behind me, ensuring that the card was usable in my old Lenovo T430. Unfortunately after installing the drivers you shared, I couldn’t add them as new drivers, because Windows deemed them unsuitable for my card. (I went to device manager, right clicked one of t…

Hi, @Janos_Szigetvari Perhaps your module is too old. Many files in the firmware are different from those in the new version of the firmware, so the new version of the tool is not very compatible. For the problem of MD5 verification failure, you can try adding the “-n” option to skip the verificatio…

Hello @leon.bao thanks for the suggestion. I tried the -n option, but got similar results: root@kubuntu:/home/kubuntu/Desktop/eeee# QFirehose_Linux_and_Android_V1.4.21/out/QFirehose -f fw -n [000.000]: Version: QFirehose_Linux_Android_V1.4.21 [000.000]: Builded: May 27 2025 07:02:21 [000.000]: fin…

Dear @leon.bao I did a bit more digging: I tried to install the drivers you supplied, for each of the unknown devices in Windows, but Windows did not recognize any of the drivers as belonging to the devices. My Quectel EC20 has the following hardware IDs: USB\VID_05C6&PID_9215&REV_0232&MI_04 USB…

Hi, @Janos_Szigetvari Sorry,The oldest driver is also around version 2.0. Your module was produced between 2015 and 2017, while the oldest driver was released in 2021. I haven’t found a driver applicable to your module as it’s too old.

Requesting atest firmware for Quectel EC20

Technical Resources LTE Standard Module Resources

Janos_Szigetvari June 11, 2025, 3:02pm 20

@leon.bao In the meantime I found this topic here:

After reading through things, could you please send me the utility QFlash V4.19 for Windows and the Quectel_Customer_FW_Download_Tool_V4.48?