Support for door and motion sensors with secondary MCU

Hi, recently I have bought a door sensor (tuya) https://www.aliexpress.com/item/NEO-Home-Door-Window-Detector-WiFi-App-Notification-Alerts-Battery-Operated-Home-Security-Sensor/32967720305.html

I tried to flash firmware using tuya-convert (I use kali 2018.2) without good result. Below the log

==> smarthack-wifi.log <==
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: authenticated
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: associated (aid 2)
wlan0: AP-STA-CONNECTED bc:aa:a2:95:6d:ff
wlan0: STA bc:aa:a2:95:6d:ff RADIUS: starting accounting session 4151C1BB1D2BB9E7
wlan0: STA bc:aa:a2:95:6d:ff WPA: pairwise key handshake completed (RSN)

==> smarthack-web.log <==


URI:/gw.json?a=s.gw.token.get&gwId=87532803c2956dff&other={"token":"00000000","region":"EU","tlinkStat":{"configure":"smartconfig","time":6,"source":"ap","path":"broadcast"}}&t=12&v=3.0&sign=f83c136be9c465f95989693af7652
Answer s.gw.token.get
[I 190312 15:33:10 web:2162] 200 POST /gw.json?a=s.gw.token.get&gwId=8753280dc2956dff&other={"token":"00000000","region":"EU","tlinkStat":{"configure":"smartconfig","time":6,"source":"ap","path":"broadcast"}}&t=12&v=3.0&sign=f83c136bf465f95989693af7652 (10.42.42.21) 5.79ms


URI:/gw.json?a=s.gw.dev.pk.active&et=1&gwId=8753280dc2956dff&other={"token":"00000000"}&t=7&v=3.0&sign=9438b3d84c9ae20cf480c9577212
Answer s.gw.dev.pk.active
READ GW ID 87532803bcddc1156dff
TRIGGER UPGRADE IN 10 SECONDS
Trigger upgrade in 10 seconds
[I 190312 15:33:11 web:2162] 200 POST /gw.json?a=s.gw.dev.pk.active&et=1&gwId=87532803bc2956dff&other={"token":"00000000"}&t=7&v=3.0&sign=9438b3d8ae6a2820cf480c9577212 (10.42.42.21) 24.04ms

==> smarthack-mqtt.log <==
1552419191: New connection from 10.42.42.21 on port 1883.
1552419191: New client connected from 10.42.42.21 as 87532803bcddc1156dff (c1, k30, u'87532803bcddc1156dff').
1552419191: Will message specified (107 bytes) (r0, q1).
1552419191:     tuya/smart/will
1552419191: Sending CONNACK to 87532803bcddc1156dff (0, 0)
1552419191: Received SUBSCRIBE from 87532803bcddc1156dff
1552419191:     smart/device/in/87532803bcddc1156dff (QoS 0)
1552419191: 87532803bcddc1156dff 0 smart/device/in/87532803bcddc1156dff
1552419191: Sending SUBACK to 87532803bcddc1156dff

==> smarthack-web.log <==
d59ec0f8937237d94e5d3d4788f04
b'2.1937834e5d3t5inCMDHpcJKQpxfOe2RbeJQPxFBvAcLbx4Es/FVgQ9YdTD2tlt9gq09JF2v6zJsm5uMafEvnzLLz/1MQ4v2+CvyUSGTLmhyo5mQxHdg4SXZL9kLEC9aqKXAOwI'

==> smarthack-mqtt.log <==
1552419201: New connection from 127.0.0.1 on port 1883.
1552419201: New client connected from 127.0.0.1 as P1 (c1, k60).
1552419201: No will message specified.
1552419201: Sending CONNACK to P1 (0, 0)
1552419201: Received PUBLISH from P1 (d0, q0, r0, m0, 'smart/device/in/87532803bcddc1156dff', ... (147 bytes))
1552419201: Sending PUBLISH to 87532803bcddc1156dff (d0, q0, r0, m0, 'smart/device/in/87532803bcddc1156dff', ... (147 bytes))
1552419201: Socket error on client P1, disconnecting.
1552419237: Client 87532803bcddc1156dff has exceeded timeout, disconnecting.
1552419237: Socket error on client 87532803bcddc1156dff, disconnecting.

==> smarthack-wifi.log <==
wlan0: AP-STA-DISCONNECTED bc:aa:a2:95:6d:ff
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: authenticated
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: associated (aid 2)
wlan0: AP-STA-CONNECTED bc:aa:a2:95:6d:ff
wlan0: STA bc:aa:a2:95:6d:ff RADIUS: starting accounting session 4151C1BB1D2BB9E7
wlan0: STA bc:aa:a2:95:6d:ff WPA: pairwise key handshake completed (RSN)
wlan0: AP-STA-DISCONNECTED bc:aa:a2:95:6d:ff
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: disassociated
wlan0: STA bc:aa:a2:95:6d:ff IEEE 802.11: deauthenticated due to inactivity (timer DEAUTH/REMOVE)

What I wrong? Thanks a lot Fabio