I am using esp8266 v12-f and boot-loader 1.7.
I got erasing failure at sector 1 (0x1000) while I was trying upgrading firmware over OTA.
The MCU hang then reset (because of WDT resetting timeout).
This is never happened when I do upgrading firmware onto USER 2 space.
Please help me how to fix that. We are going to finalize our prototype phase but we have to pend it because of this issue.
Thank you and regards,