iOS 12.5.2 downloading how to

These are the iOS options based on iPhone Model --> You need to Identify your iPhone model - Apple Support

• iOS 14.4.2 —> 6S / 6S Plus, SE (1st Gen and 2nd Gen), 7 / 7 Plus, 8 / 8 Plus, X, XR, XS /XS Max, 11,11 Pro /11 Pro Max, iPhone 12, 12 Mini, 12 Pro, 12 Pro max

• iOS 12.5.2 —> Final release supported on iPhone 5S, iPhone 6/6 Plus, iPad Air, iPad Mini 2, iPad Mini 3 and iPod Touch (6th generation)

• iOS 10.3.3 —> Final release supported on iPhone 5C and iPad (4th generation)

• iOS 10.3.4 —> Final release supported on iPhone 5 and iPad (4th generation) Wi-Fi + Cellular

• iOS 9.3.6 —> Final release supported on iPhone 4S, iPad 2 Wi-Fi + Cellular, iPad (3rd generation) Wi-Fi + Cellular, and iPad Mini (1st generation) Wi-Fi + Cellular

• iOS 7.1.2  —> Final release supported on iPhone 4.

• iOS 6.1.6 —> iPhone 3GS and iPod Touch (4th generation) only

• iOS 4.2.1 —> Final release supported on iPhone 3G and iPod Touch (2nd generation)

• iOS 6.1.5 —> Final release supported on iPhone 3GS, and iPod Touch (4th generation)

• iOS 3.1.3 —> Final release supported on iPhone (1st generation) and iPod Touch (1st generation)

Learn how to--> Update your iPhone, iPad, or iPod touch - Apple Support

Hi, 12.5.2 is an over the air update, Make sure that you are connected to wifi. Then go to

Settings

General

Software Update

If you need to download the update to install later, search the web for IPSW Downloads. Although I would recommend the over the air update method.