Guys, I like the talk about JTAG, but I don't think it will do him any good.
His device is not bricked. Xposed only installs in /system/bin (if I am not mistaken). Thus it's impossible to brick it that way. It does nothing to the bootloader, download mode or any other partition.
He has clearly a faulty battery or an other hardware failure. He just had bad luck imo.
Samsung Galaxy S 4 I9505 | WanamLite v3.0
Samsung Galaxy S II I9100 : AOKP 4.2.1
HTC Touch Pro2 | ROM: Valkyrie 6.5.23115TR2.5
HTC HD2 | DarkStone1337 [FroyoStone Sense - V3.2]
HTC Desire : Oxygen v2.1.3