iPhone 14PM ios 16 flash ipcc 64 or 63 flash in and restart the dropped in

When I flashed ipcc 64 or 63 on iphone 14PM ios 16, I found that no matter how I flashed it with Aisi, it dropped after restarting. Tossing for a long time The solution is as follows: Use iTunes to flash, turn on the flash ipcc mode on the command line, then turn on shift and select ipcc, and it will not drop after restarting Why don't I want to upgrade when I brush ipcc63/64, but the new ipcc signal and network speed are obviously improved (the signal is hard to say metaphysics, but it is still obvious that the network speed in the same place has increased from 500 to 800 +) Then here comes the problem. Due to all kinds of tossing yesterday, I restarted and deleted ipcc and repeatedly activated imessage. What's going on when I activate it now? Restarting and activating again is waiting for the loop to be installed. I checked the bill and sent the text message. Is it activated too many times in a short time (the text message costs 9 yuan....)