update content：
1. Add GPS Track switch:
i. TRK=1: There will be map information
Ii. TRK=0: No map information, but speed and timing functions exist
2. Update GPX file format
3. Optimize ACC detection procedure
4. Pressing and holding the control key for 10 seconds will format the SD CARD
1. Add GPS Track switch:
i. TRK=1: There will be map information
Ii. TRK=0: No map information, but speed and timing functions exist
2. Update GPX file format
3. Optimize ACC detection procedure
4. Pressing and holding the control key for 10 seconds will format the SD CARD
Download file