Full ota is working fine. Incremental is accepted but does not start.
Update_engine_client --payload=file:///data/ota_package/payload.bin --update--headers="$(cat/data/ota_package/payload_properties.txt)"
[INFO: update_engine_client_android.cc(354)] Command took 323 ms
mek_8q:/ # update_engine_client -follow
[INFO: update_engine_client_android.cc(96)] onStatusUpdate (UPDATE_STATUS_IDLE (8), 0)
^C[INFO: update_engine_client_android.cc(354)] Command took 32027 ms
mek_8q:/#