iPhone 4 and Safari running iOS 7.1.2 cannot access certain SSL websites (e.g. https://letsencrypt.org) due to expired certificates. Installing the profile provided at https://blog.jjhayes.net/wp/2021/11/13/fix-old-iphone-4-4s-ios-7-ssl-certificate-errors/ did not help. (I'm using the device's password.) Is there another way to update the trust store?