Bring potatoes and water to cover to boil in medium saucepan. Reduce heat to low; simmer 15 minutes or until fork tender. Drain potatoes; cool slightly. Peel potatoes; shred with grater. Mix shredded potatoes, bacon and salt until well blended. Form into 6 patties.
Heat 1 tablespoon of the oil in large nonstick skillet on medium heat. Add potato patties; cook 7 to 8 minutes per side or until crisp and golden brown. Transfer to plate; keep warm.
Mix sweet soy sauce and tamarind concentrate in small bowl. Set aside. Season steaks with pepper. Grill over medium-high heat 3 to 4 minutes per side or until desired doneness. Let stand 5 minutes before slicing.
Mix arugula, cheese, remaining 1 tablespoon oil and lemon juice in large bowl; toss to coat well. Set aside.
Melt butter in large nonstick skillet on medium heat. Cook eggs, sunny-side up, until desired doneness. To serve, place a potato rosti, 1/2 cup salad, sliced steak and a fried egg on each plate. Drizzle steak with soy sauce mixture.