Because the iPad Mini 1 is an A5 device, you can use the exploit. This is the most "permanent" DIY method for this specific model.
Silver exploits the (yes, it works on A5 chips) and uses kDFU mode to patch the activation records locally. It does not require a jailbreak first. bypass icloud ipad mini 1 ios 93 5 better
You can use Safari, YouTube, some streaming apps, and even install certificates to block future lock screens. What doesn’t: iCloud, App Store login, FaceTime, iMessage. Better tip: After bypassing, install a profile from ibypasscloud.com (for iOS 9) to disable the activation daemon. Because the iPad Mini 1 is an A5
This essay explores the methods and ethical considerations surrounding the bypass of iCloud Activation Lock on an iPad Mini 1 running iOS 9.3.5. The Challenge of the iPad Mini 1 It does not require a jailbreak first