DS18B20

[greg-79]

use "ESP download tool" eraser chip firstly, then download again.

Hi! 
The chip's eraser did not help. The firmware is filled in, but the board does not start. Turning off the power, holding down the button didn't help either. I realized that there was a problem with the boot memory area. I tried to register different factory firmware there by memory addresses

After two days of torment with efuse, I was still unable to remove the protection. At some stage of the firmware, they were blocked. I installed ESP-IDF, tried to change the Security Boot values, but it didn't help, because they can only take one value. As a result, we had to solder the module to a new one. I filled in the firmware 2.2.2.. The outdoor temperature sensor began to give correct readings.
   

Thanks a lot for the support and the new firmware.

 Friends, be careful when downloading the firmware, use serviceable power supplies and data cables.