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BOOSTXL-CC3135R: uart with ROLE_STA + FW upgrade?

Antonio Delle Femine
Prodigy 15 points

Part Number: BOOSTXL-CC3135R

Dear all,

I am using your product CC3135 and I have interfaced it to STM board using UART protocol. I ported the host driver, and I am able to call "sl_start", read firmware version, changed baudrate and so on...

They're all executed successfully until I changed the mode from "ROLE_AP" to "ROLE_STA" using the command:

status = sl_WlanSetMode(ROLE_STA);

From this moment, the UART stops communicating, and when I change back to "ROLE_AP" it starts working again.
Obviously I need ROLE_STA for connecting my system to wifi network.

I open also a support ticket on this issue, (Number: CS0551934) they say that I can find help here on forum.

Moreover I read on the forum about similar problem. Some colleague suggested to update the FW on BOOSTXL-CC3135 board.
I try to update the service pack using UNIFLASH. But It doesn't work. I connect a usb to uart adapter to the board like explained here:
https://www.ti.com/lit/an/swra647a/swra647a.pdf?ts=1623243485438&ref_url=https%253A%252F%252Fwww.google.com%252F

The SW can't connect to the uart boot loader, it neither tries to move the uart lines that I monitor with oscilloscope. It is not clear where the reset pin has to be connected.
Someone can help me in flashing the device? This is an even more important issue, because we need to go in production within the end of month and at the moment we have no way for first programming.

Thank you very much,

Antonio.

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