When TCKM002 is tested in the Key Management Test case, the iPhone will send a reset command to the accessory after selecting "Set+Verify key Rotations" in the FMCA app, resulting in the BLE disconnection. Sometimes iPhone will not send a Connection Indication Packet after disconnection. FMCA APP displays an error like attachment. May I ask why?

Homekit BLE will disconnect if no data is exchanged for a period. But if I would like to perform a firmware update with my owm smart phone app, what is the appropirate operation to avoid disconnection before transmitting the image file? Perhaps keep sending some packet from iphone?