OTA with esp8266 stops at 5%

[willi-uce]

OTA with esp8266 (D1 Mini) stops at 5 % and ESP reboots. I can not find out why. The same sketch on ESP32 is ok and updates firmware. I use example customHTML for testing.

[mano1979]

check the serial monitor. does it say "Bad size given"?

[willi-uce]

No, in serial monitor is:
User exception (panic/abort/assert)
--------------- CUT HERE FOR EXCEPTION DECODER ---------------

Panic core_esp8266_main.cpp:191 __yield

and after stack:

ets Jan 8 2013,rst cause:2, boot mode:(3,6)

Only D1 mini with custom html example, nothing else is wired at the D1 mini

[mano1979]

Try using another partition table. Your sketch might be too big for the partition you selected for the littlefs filesystem. Do take into account that your esp8266 probably only has 1mb (total) flash.

[willi-uce]

D1 mini has 4 MB Flash, I select FS 1 MB and OTA 1 MB. My sketch is about 400 kB.