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Answer: This is caused by unstable power, because battery power is low or voltage is unstable. Please replace the
battery.
Question 3: After powering it on, in a period time there is no response or reaction is not sensitive, such as
delay phenomenon. What happened?
Answer: After powering it on, there will be 5-20 seconds of power initialization. During this period, it is normal to have no
response or slow reaction. After this time it will work normally.
Question 4: When updating audio, sometimes it needs to wait for a long time. What is the problem?
Answer: This may be because in the last time, it hasn't finished updating before the power off or because the external
power supply is not stable, causing the FLASH file error or damaged. Thus, when updating audio again with power on,
it will repair the FLASH file, so the time is a little longer.
