In firmware downlaod mode, USB Serial Device port shows instead of SPRD U2S DIag Port

Vishal · February 19, 2024, 4:03pm

Dear Team,

We are trying to upload the firmware on EC200UCNAA module on UMTS&LTE Evaluation board.

As mentioned in document, we enter the module in firmware download mode, but in device manager it is showing USB Serial Device port instead of SPRD U2S DIag Port.

I have tried both methods to put device in download mode. 1) Using AT command AT+QDOWNLAOD and 2) by shorting USB_BOOT and VDD_EXT pin. In both case it shows Serial Devie port. Can you please provide solution for this issue.

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I also directly flashing through AT port using QFlash tool, but flashing is not started.

Below attached snapshot of my EC200UCNAA module.

looking for positive response.

Thanks,

Bean.Wang-Q · February 20, 2024, 4:08am

Have you try the AT+QDOWNLOAD=1 ?

Vishal · February 20, 2024, 4:59am

yes, i also try that command

Bean.Wang-Q · February 20, 2024, 5:13am

AT+QDOWNLOAD=1
but not
AT+QDOWNLOAD

Bean.Wang-Q · February 20, 2024, 5:23am

Do you have a Linux PC. Maybe it is easier to try to flash it on Ubuntu PC.

I have double checked that
AT+QDOWNLOAD=1
and then the modem will go to download mode.
And flash the EC200U, acually you even don’t need to set it to download mode.

Vishal · February 20, 2024, 6:34am

I have tried with AT+QDOWNLOAD=1, but it still showing USB serial port.

If you have latest driver for EC200UNAA for windows OS, then kindly share.

And I also Linux system, But I don’t have drivers for Linux and tools. Please also share drivers for Linux and tools which are required for flashing. I will try on both systems.

Bean.Wang-Q · February 20, 2024, 6:38am

From the picture, the COM12 should be the diag port.
Don’t care about the name of the port. You could try the QFlash now.
I will send you the EC200U driver and you could try it.

Bean.Wang-Q · February 20, 2024, 6:39am

EC200U.zip (9.4 MB)

Bean.Wang-Q · February 20, 2024, 6:40am

For Linux, there is no special driver.
I will send you the QDLoader and please try to flash:

./QDLoader -f *.pac

Vishal · February 20, 2024, 6:57am

By using this driver, now I get SPRD U2S Diag Port.
Thank you.

Additionally, we require tools for capturing AP and CP logs. Could you please share the necessary tools or provide guidance on acquiring them?

Bean.Wang-Q · February 20, 2024, 7:18am

It is better to create new topic.
Other one will provide you the tools. And who will analyze the log for you?
Quectel or Unisoc?