EM06-E disconnecting issue

Technical Support
1

Which Khadas SBC do you use?

VIM3 Pro with M2X WWAN Extension

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu

Which version of system do you use? Khadas official images, self built images, or others?

Self built images kernel 4.9 and 5.15

Please describe your issue below:

We use Quectel EM06-E 4G module with Khadas VIM3 Pro. The 4G module were purchased from Khadas but we have serveral different batches.
It seems that our SIM card does not work well with the EM06-E firmware EM06ELAR04A04M4G. The 4G network will disconnect after about each 10 minutes. For other firmware (EM06ELAR04A20M4G, EM06ELAR03A09M4G), there is no pronlem.
Do we have a methode to update 4G module firmware on Ubuntu VIM3? Since the firmware of 4G module is different, will each batch be tested with VIM3 by Khadas?

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Thanks a lot!

2

Hello, @JJ1997

We will confirm this issue and get back to you later.

3

FYI, after updating the firmware to the latest EM06ELAR04A22M4G, it works well with the same 4G module.