Lamp light intensity fluctuates randomly

I’m having some weird happenings with my lamp lately. Basically, I turn it on (white mode) and the light intensity just fluctuates randomly. At first I thought the setting on my phone was conflicting with the setting on my tablet and it was like the two were fighting or something, but I ended up uninstalling the app from my tablet and the lamp still has this weirdly fluctuating light sometimes when I turn it on. What could possibly be causing this?

Also on an unrelated note, it seems impossible for me to update it to the latest firmware, the % goes to 20 immediately and then just stops there forever.