Issue while updating firmware

[tarun9573]

Hi,

I am getting issue while updating firmware. Every time when I am trying to update firmware in my BLE device which is in OAD mode, the new firmware is not getting uploaded, in fact the older firmware gets re-stored in the device. Also, it is getting re-stored in a fraction of milliseconds just when this line executes:

[BLEUtility writeCharacteristic:self.d.p sCBUUID:sUUID cCBUUID:cUUID data:[NSData dataWithBytes:requestData length:OAD_IMG_HDR_SIZE + 2 + 2]];

After that the device gets disconnected and I get an alert saying the device is disconnected and firmware update is interrupted.