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V1.0
2. Brun Official Image
1) Download and install tool software
（
If they are already installed,
this step can be ignored
）
SD card format software SDCard Formatter download URL :
https://www.sdcard.org/downloads/formatter_4/
Image burning software win32diskimager download URL:
https://sourceforge.net/projects/win32diskimager/
2) Format SD card
Insert the SD card into the card reader -> Insert the card reader into the
computer -> Open the SDFormatter software -> Select SD card -> Select quick
format (generally select quick format, other options can be selected according to
your own needs) -> Click the Format button
-> Select "Yes" -> Click OK after
formatting.