Can't OTA update bk7238 device via OTA
Author: davidcoulsonCreated Aug 10, 2026Updated Sep 17, 2026
The problem
After OTA upload, the device does not update and logs the following:
20:28:24 | [W] | [component:342] | esphome.ota set Warning flag: unspecified
-- | -- | -- | --
20:29:02 | [E] | [ota.arduino_libretiny:064] | End error: 9
20:29:02 | [W] | [esphome.ota:482] | End update err 132
20:29:02 | [E] | [component:349] | esphome.ota set Error flag: unspecified
20:29:02 | [W] | [component:473] | esphome.ota took a long time for an operation (38484 ms), max is 50 ms
20:29:07 | [E] | [component:374] | Which version of ESPHome has the issue?
2026.7.4
What type of installation are you using?
Home Assistant Add-on
What platform are you using?
BK72XX
Component causing the issue
ota
YAML Config
Anything in the logs that might be useful for us?
Additional information
No response
Source: esphome/esphome