It helped me come back from an almost bricked tablet!
I had installed HannsTitan-v0.2d on my tablet and it worked great for a while.
But once it had been turn off by holding the power button down too long, and then turning it back on, I got stuck on the Hannspree startup logo.
I could not even boot to the recovery mod!
But after running the restore, I was able to get manufacturer recovery (as it overwrote the custom one) and then was able to rerun the rom installations!