Similar to some well-publicized iPad problems, updating to 9.3.2 OTA resulted in a screen directing me to iTunes. This resulted in a failure to upload the update software at the firmware update stage. Also unable to restore to factory default settings. On all attempts I receive error code "50". I've spoken with AppleCare twice, including escalation to a higher level of technical support. No fixes found with that so brought to Genius Bar. No fixes found including trying to restore with the battery removed. Error code 50 is very general but does not mention anything about iPhone hardware. Update has failed with multiple MacBooks and cables, so it's not a USB port/cord issue. I have no security programs running. All MacBook software and OS up to date. Hard reboot/restore attempts unsuccessful. The final conclusion from the Genius Bar tech was that it must be a hardware failure based on their "internal documentation" about error code 50, and the logic board replacement will be $299. I would appreciate any responses that: 1) can help me gauge whether this is a more widespread problem (seen some random posts suggesting iPhone 4's have had problems). Responses to the effect of "worked on mine" are less helpful since I assume those are the vast majority. 2) can support/refute the notion that this is some hardware failure "unmasked" by the update. Phone was working like a charm prior to update attempt and never had a single problem. It stands to reason if a large enough number of iPads had a problem to make Apple pull the update for those devices, then there may be something intrinsic to the update that's incompatible with other devices. I don't have a CS or EE degree, but Apple's attempts to explain away this problem sound like total BS to me. I am a longtime Mac user, partly because I want all of my devices to interface easily, and partly because they tend to be more reliable machines. This experience is making me rethink the latter.