Original itms:

itms-services://?action=download-manifest&url=itms-services://?action=download-manifest&url=https://cyrusinstaller.com/app.php?title=GBA4iOS&ipa=https://cyrusinstaller.com/vip/vipapps/GBA4iOS.ipa

Encoded itms:

itms-services://?action=download-manifest&url=itms-services://?action=download-manifest&url=https%3A%2F%http://2Fcyrusinstaller.com%2Fapp.php%3Ftitle%3DGBA4iOS%26ipa%3Dhttps%3A%2F%https://t.co/1gFaXZp6h2%2Fvip%2Fvipapps%2FGBA4iOS.ipa