EC200U flashing error

prash · February 23, 2022, 2:04pm

I’m very new to the EC200U eval board. These are the steps I followed:

Boot into Windows
Supply power to the EC200U eval board via the USB cable.
Connect the USB-to-Serial cable (appears as COM5)
4, Push the PWRKEY pin for a second and wait until the blue LED starts flashing.
Start QFlash in admin mode, select the relevant *merge.pac
Press the Start button on QFlash.

I get the following uninformative error message (screenshot). Please advise on what to do next.

prash · February 23, 2022, 2:12pm

After waiting for a while, the status info in QFlash changes to “[COM0]Download fail[Open port fail]!” which is very strange because I don’t even have a COM0 on my computer. All the available COM ports are shown in the device manager screenshot.

Boris_Borisov · June 23, 2022, 6:49am

Exactly the same problem! What could be the reason?

prash · June 23, 2022, 8:04am

I tried on a different computer, and it worked flawlessly. I borrowed an old laptop from the office for flashing, and gave up on trying to solve the problem on my main dev machine.

pavithra · July 30, 2022, 8:38am

The same error came for me. pls suggest the crct way

pavithra · August 5, 2022, 9:11am

@prash hi, first connect the module to PC through usb to uart cable, then open Qcom through USB AT PORT send command AT+QDOWNLOAD and send enter. it replies with okay. This makes the module to be ready for download mode. After this SPRD U2S port would be enabled which is for firmware download.