Forty SpaceX satellites burn up after solar flare hits Earth

On February 4th, SpaceX launched 49 Starlink satellites, but up to 40 crashed back to Earth due to a solar flare. The flare increased atmospheric density, trapping the satellites in dense air. SpaceX attempted to minimize drag and maneuver the satellites to a higher orbit, but the increased drag and low power motors prevented success, leading to the crash.

What actions did SpaceX take to minimize atmospheric drag on the satellites?

What ultimately prevented the satellites from maneuvering to a higher orbit?