Wiping from the recovery is absolutely pointless, because it also reboots in download mode.
My guess is that it has nothing to do with the ota update but you just got bad luck.
In 9/10 cases this is a faulty power button. That's why it keeps rebooting. You have to send it in for warranty or you have to replace it yourself. The part only costs about 5 euro's so it's not expensive.
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