Forums - Why is my qca4020 board going in Diagnostics mode

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Why is my qca4020 board going in Diagnostics mode
akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Mon, 2020-09-28 12:15

Hello,

We are facing issue, when we power qca4020 device it is going in Diagnostics mode. As we can see in device manager

Qualcomm HS-USB Diagnostics 9055 (COM72)

1) What is the reason of the qca4020 board going in diagnostics mode?

Thank you,

Akshaay

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abhghos
Join Date: 27 Aug 18
Posts: 29
Posted: Mon, 2020-09-28 17:06

This is because you have the manufacturing image inside the QCA4020 board.

This image is needed for connecting with the QDART or the mfg_tool.exe

If you erase the flash, the board will go back to normal.

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akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Mon, 2020-09-28 22:10

We are not able to erase the flash, using below command

qflash.py --erase --comm 79

When we enter this command the output stuck at qflash.py Info: Download device programmer...

Is there any other way to erase the flash?

Thank you,

Akshaay

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akshay.b
Join Date: 2 Aug 19
Posts: 62
Posted: Mon, 2020-09-28 23:07

Issue Solved !!!!

We were using 10k resistor as pullup on gpio 22 to connect it in EDL mode.

On using 1k resister insted of 10k solved it.

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