https://www.youtube.com/watch?v=rMVfx5XtNPE&feature=youtu.be
First we need to find the corresponding radar devices in HomeAssistant, they are often in Esphome, please note that we have modified its default name here. Click on the VISIT button, this will take you to the sensor's own web server interface.
Go to Devices and Services page.
Click 1 Device
On the device page, click the VISIT button.
Click Broswer Button.
Find the ota-*-.bin file.
Click on the update button and wait for a while, depending on the network, it can be anywhere from a few seconds to tens of seconds.
Click The Update Button.
Wait The Update Sucusee Info.
<aside> <img src="/icons/info-alternate_red.svg" alt="/icons/info-alternate_red.svg" width="40px" /> Due to some design issues with esphome, sometimes showing success doesn't mean the firmware is updated. Finally, the version date shown on the device page in Home Assistant is used as a reference.
</aside>