We released a hotfix to address a regression (reported as https://quality.embarcadero.com/browse/RSP-18813) in RAD Studio Tokyo Release 1 related with AdHoc deployment for iOS. The fix available for download is at:

https://cc.embarcadero.com/item/30797

The fix (which is a single file to add to your system) provides support for building iOS Ad Hoc Applications with RAD Studio 10.2.1 using Xcode 8.2, 8.3.2 or 8.3.3. Please ensure that RAD Studio 10.2.1 (Tokyo Release 1) is installed before applying this fix, it is not for the original 10.2 release.