Following a barrage of betas over the past week, Apple rolled out the final version of iOS 10.3 to the public on Monday. After launching iOS 10 last September, Apple was relatively quick to follow up with iOS 10.1 in October and iOS 10.2 in December, but it ended up taking more than three months to finalize iOS 10.3.
It’s worth noting that 9.3 was the final numbered release of the iOS 9 era, so unless something changes this generation, we likely won’t see anything more than bug fixes and the like from here on out.
If you want to update your iDevice to iOS 10.3 immediately, there are two ways you can do.
1. Heading to Settings > General > Software Update and tapping “Download and Install” at the bottom of the page.
2. As always, you can also apply the update through 3uTools.
Step1. Download and install the latest 3uTools on your PC. Before upgrading, you should backup your iDevice. Click here to check the details. Connect your iPhone to PC with a cable. Then please click the button ”Flash & Jailbreak”→ click the button “Easy flash”.
(Note: If you want to retain the data, please select the option " Retain User's Data While Flashing".)
Step2: Here, please select the firmware you want, and then click the button “Flash”. (If you have downloaded the firmware, you need to firstly import it to your PC, and then flash your iPhone).
Step3: Keep a good connection between iDevice and PC, and then just wait until this process is finished.