Pycom WiPy 3.0 Manual page 194

4.2.15 OTA update
# make the socket non-blocking
# (because if there's no data received it will block forever...)
s.setblocking(False)
# get any data received (if any...)
data = s.recv(64)
# Some sort of OTA trigger
if data == bytes([0x01, 0x02, 0x03]):
print("Performing OTA")
# Perform OTA
ota.connect()
ota.update()
sleep(5)
194