ios8toios7

iOS 7 is the seventh major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 6.

2018年2月4日 — Plug into iTunes and use restore, update iPhone. Dont forget to back up your device so you can get all the info back.

2018年9月28日 — While in iTunes, click on “Summary,” and then, while holding down the option key on a Mac or shift on Windows, left-click on “Restore.” Select ...

1. Press the Shift key (on Windows) or Option key (on Mac) and click the Restore iPhone button. Restore iPhone.

iOS 8是美國蘋果公司旗下行動作業系統iOS的第八個主要版本，取代前代作業系統iOS 7。iOS 8於2014年6月的WWDC大會中首次公布，並於同年9月17日正式推出。

2014年9月20日 — One thing I learned about having an apple device, is to keep the factory version on it , to retain its performance. With Mac , you can downgrade ...

2014年9月18日 — iOS 8 vs iOS 7: here is a detailed pictorial comparison of iOS 7 and the latest iOS 8 seeded to bring improved and new features to the OS.

前幾年每逢新版iOS 推出，用戶總是急不及待升級，可是今年iOS 8 的情況就不同了。