Nano boot failed

my nano module failed to startup,The phenomenon is as follows:

error.log (17.9 KB)

during my debug,i found if i change zhe Carrier Board Supplies same as power_en,my board boot success,then,zhe module can success all the time.
now,We have the following questions:
1、why i change the Carrier Board Supplies time,the RST levle change from 3.3 to 1.8V?
2、why the module success once,can boot all the time?

Hi, is this same question to your another topic Nano mdodule failed to start ? If so, please go on discuss in that topic.

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