I have a first generation iPad pro 12.9" ( 2016). Two days ago, I updated the softwate to 11.4.1. Charged the iPad overnight. When I began using it the next day, I noticed it had 1 percent charge left. I tried to recharge it but to no avail. Tried every recommendation on the internet (restart, hard reset, restore via iTunes) but no luck. Apple genuis bar tested it and said they think it might be hardware issue. They estimated it wil cost me $600 to repair. Has anyone else had a problem with thwir iPad after they updated the software?