Failed updating firmware! Please check your file and retry!

This is my new WLED - when I try to upgrade it using “Manual OTA update” with current release (WLED_0.14.0-b1_ESP8266.bin) - I get:

Screenshot from 2023-02-14 16-30-08

Manual OTA update from 13.0-b6 is likely to give you issues even if the install is done , better flash using usb from site