Could not get data flash log after disarm

I have been able to download DF log without problems 1-2 years ago from MP. Since last year, I cannot download DF files after disarm my quad. I have tried different combination of these 2 param :–
LOG_DISARM and LOG_FILE_DSRMROT, without success.

MP 1.3.56 Build 1.3.6672.30243
Copter 3.5.5

Pls help.

Have you tried a different GCS?

Are the logs present on the SD card?

Thanks for yr reply.

I am not familiar with other GCS, such as APM Planner V2.

The log file is in the SD card after disarm, just could not be downloaded.

What are the setting of the 2 param that I mentioned last time , ie.
LOG_DISARM and LOG_FILE_DSRMROT that make downloading possible ?

Another question : How do I make the date to display the current date in
the log file ? Mine shows 1999.

Thank you.

The log file is in the SD card after disarm, just could not be downloaded.

OK, there are fixes in 3.6 which should address that.

What are the setting of the 2 param that I mentioned last time , ie.
LOG_DISARM and LOG_FILE_DSRMROT that make downloading possible ?

Setting LOG_DISARM turns logging on when you are disarmed.
LOG_FILE_DSRMROT closes the log file after the vehicle disarms.

Another question : How do I make the date to display the current date in
the log file ? Mine shows 1999.

You need an external time source - usually GPS.

Thanks for reply.

I finally managed to download the log files on my quad running copter
3.5.5. Param for LOG_DISARM and LOG_FILE_DSRMROT can be 1 and 0, or 1 and 1
respectively.

Yes, you are right…if I don’t have GPS lock , then no current time on
log files.