I used this website to download the HK-ESP32 CAM (chinese board) files from Baidu:
https://imwcr.cn/api/bdwp/


Baidu links found at:
https://hkdoc.readthedocs.io/en/latest/source/Arduino/ESP32Arduino.html

-- [espressif.rar]
-- https://pan.baidu.com/s/1BXT0BUuBzCrGQT9FAb5qXw
-- PW: 8ita ...

Hi
Im new here.
I got the same problem, did you found a solution?

Regards Jonas