Issue Config Tool Fw update

S2E Module WIZ750 Series
1

Hi, I have a custom hardware based on WIZ750SR , this works with official FW version 1.2.4, I built a FW with Keil based on GitHub - Wiznet/WIZ750SR: WIZnet Serial to Ethernet(S2E) module based on W7500 chip, WIZ107/108SR S2E compatible device - tag v1.2.4 . If I update the FW with config tool the device is bricked , If I update with SWD works and next works also with config tool. I think that the issue is related to the APP flash address but I’m not sure. Please can you help me

Regards

2

Hi,

WIZ750SR FW consists of two parts, application boot(we call it app_boot) and application.
When you download binary with SWD or via ISP communication, you should use the whole binary which includes app_boot and application.
But when you update FW with the configuration tool, you should use the application binary only.
App_boot should be running on WIZ750SR or your own HW to upload new application via the configuration tool.

I guess you uploaded with a wrong binary.

Regards,

James.