evadim commented on Mar 1, 2020
Got same issue and there is a thing:
Compiled firmware with esp_wroom_02, flash by com port = OK.
Try to update via OTA = fail.
Changed type to esp01_1m, flash via OTA = fail. Flash via com works fine.
Now, OTA works fine vith esp01_1m
Changed back to esp_wroom_02, updated via OTA works fine (did several times, turn of power, etc).