di sa lahat ng sitwasyon gagana yan, kase what if kung totally corrupted na yung motherboard ng phone, wala na pag asa yun kundi palitan. punta ka sa xda-developers forum for more info
Before using that USB jig be sure to charge first your battery to full.
How to make your own USB jig just solder 300k to pin 4 & 5 then your good to go or just purchase it electronic shops.