Opening the Flex 10.1 can be challenging. Don't get discouraged if it takes multiple attempts before the Flex 10.1 is opened.

Insert the plastic opening tool into the seam between the front case and the rear panel of the Flex 10.1.

Gently enlarge the existing gap by pressing and wiggling the plastic opening tool into the gap near each of the clips attached to the rear case, pushing the clips toward the center of the device until the clips have been freed.

Repeat the same procedure to free all clips around the Flex 10.1.