import time
from machine import LED

led = LED("LED_BLUE")

while True:
led.on()
time.sleep_ms(500)
led.off()
time.sleep_ms(500)
#上面IDE示例代码报错无法识别LED

import time
from pyb import LED

red_led = LED(1)
green_led = LED(2)
blue_led = LED(3)
ir_led = LED(4)
#使用该代码可正常运行

LCD也会有同样的问题，烧了v4.3.0固件后import lcd仍旧无法识别，IDE也必须用原来的版本吗？