One photo shows the main gear doors open. During normal gear extension they close again. If it landed with them open then that indicates they had to lower the gear using the alternate system. This in turn indicates that they had lost the centre hydraulic system.
Using the alternate extension system the up-locks are released electrically and the gear free falls under gravity to the down position. Large springs then secure the down lock arms. The main gear doors remain open but there is still ground clearance.
Nose wheel steering is also powered by the centre hyd but there is a reserve system so it should still have been working. Normal brakes are powered by the right hyd system