The latest ios firmware ipsw files are given and you can download any version of the software for your desired model. Please note that it is free and does not require a jailbreak, developer ID or a UDID .Just tap on the Download button and download will start.
Also the latest updated ios 11 beta ipsw files are updated regularly.
Keep in mind that the firmware is not a beta release. It is the official public release of the ios software for iPhone and iPad. You can install it without any issues using iTunes. And it will not require any sign in to developer account or UDID password.
iOS 11.2.5 is publicly available now. And you can download ,install it on your iDevice. OTA update is still available. But if you want to do a clean install. Then download the firmware using IDM .And install it via iTunes.
You can download ios 11.2.1 firmware ipsw file for iPhone and iPad.
NOTE : As we provide you the downloads using high speed servers. It is recommended to keep this window open.