Sorry, i dont know chinese so i tried to use translater but i just thought that writing as english is a lot better to express.
i've bought the BU04 on board model and i'm using it with esp32 s2 through uart(rx,tx).
i succeeded at communicating with serial monitor, but after i tried to set SETCFG, i just throwing INIT FAILED.
AT+SETCFG AT+SAVE -> as one line, it dosen't show INIT FAILED, but i does not save changed information.
AT+SETCFG ->
setcfg ID:1, Role:1, CH:1, Rate:1
21:14:52.219 ->
21:14:52.219 -> OK
21:14:52.219 -> INIT FAILED INIT FAILED....
setcfg ID:0, Role:1, CH:1, Rate:1
21:14:52.219 ->
21:14:52.219 -> OK
21:14:52.219 -> INIT FAILED INIT FAILED....
i can't type anything.
if i don't change the ID(65535),it successfully saves information but it does not communicate each other.
i dont know whats the problem 
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