Hi dear,
This is my first time on this forum. I had a concern for reading the telemetric data from my flights. I downloaded the data from the internet memory of phantom 4 on computer. This is a .BAK file. How can I extract this data and read the information?

Thank you for your help

Forget the .bak file.
Go to http://www.phantomhelp.com/LogViewer/Upload/
Follow the instructions to upload your flight record and it will give you a detailed report.

Do you mean the .DAT file? There is a flight data reader in the Assistant 2 software.