the house i recently bought had a old vivint panel (V1.6). i bought the independence package and thought i was able to successfully update firmware to V1.9.6. i got the green pass after the update was complete. However, after i disconnected the cable and plugged back in the battery and the power supply the panel screen did not turn on, and the alarm starting blaring. I had to unplug everything for it to stop. I then even tried removing the old vivint cell module and reattaching power to the panel but got the same result with the alarm.
Wanted to see if anyone has had a similar problem and what actions they took to remediate it?
thanks in advance